CN106587830B - Waste phosphoric acid tributyl/cement solidification material of kerosene and its preparation method of solidified cement body - Google Patents

Abstract

The present invention relates to a kind of cement solidification material of waste tributyl phosphate/kerosene and the preparation method of cement solidification body thereof, the cement solidification material of waste tributyl phosphate/kerosene is calculated by weight percentage, and it comprises: Portland cement: 45.0‑65.0%; fly ash: 17.0‑38.0%; silica fume: 4.0‑6.0%; expansion agent: 4.0‑6.0%; powdered water reducer: 0.8‑1.2%; compatibility improver: 5.0‑6.0 %; solid oil materials: 2.5‑3.0%. The cement solidified material of the invention has the characteristics of large waste storage capacity, stable mechanical properties, low nuclide ion leaching rate and the like, and the preparation process of the cement solidified body has no chemical pollution, no radioactivity, no light pollution and low noise.

Description

Preparation of waste tributyl phosphate/kerosene cement solidified material and its cement solidified body method

technical field

The invention relates to the technical field of radioactive waste treatment, in particular to a cement solidification material of waste tributyl phosphate/kerosene and a preparation method of the cement solidification body thereof.

Background technique

Waste tributyl phosphate/kerosene (TBP/OK) is produced during the extraction and treatment of actinides and lanthanides in spent fuel and high-level waste liquid. It is an important radioactive waste liquid produced by the nuclear industry. According to GB9133-1995 The "Radioactive Waste Classification Standard" stipulates that it belongs to medium and low level radioactive waste. After repeated use of tributyl phosphate (TBP) as an extractant, it is subjected to chemical and radiation effects, and its degradation reaction performance deteriorates, so it needs to be disposed of as radioactive waste. Due to the complex chemical composition of radionuclides and their flammability and volatility, special considerations are required for handling and conditioning.

At present, the disposal methods of waste tributyl phosphate/kerosene at home and abroad mainly include incineration or pyrolysis, hydrolysis solidification, indirect electrochemical oxidation, plastic solidification and cement solidification. Among them, incineration or pyrolysis needs to be operated in a high temperature environment. The phosphorus, sulfur and chlorine in the waste liquid seriously corrode the equipment and the exhaust gas purification is complicated, which makes the construction and maintenance of the facilities difficult. After hydrolytic solidification and indirect electrochemical oxidation treatment, the waste still needs to be treated with cement solidification in the later stage. The process is complicated and the treatment cost is also high. The cured plastic body is easy to burn when exposed to an open flame, is not resistant to high temperature, and may easily cause radioactive leakage. N series products such as N910 polymer developed by Nochar Company in the United States are used to solidify organic waste liquid. The solidified body has good stability, but it is also not resistant to high temperature, and Nochar is expensive. The solidified body after absorbing waste liquid is loose particles or Small pieces, currently there is no relevant waste body acceptance standard in China. The cement solidification method is widely used to solidify medium and low radioactive wastes, but due to the poor compatibility between cement and waste tributyl phosphate/kerosene, the volume inclusion capacity of waste tributyl phosphate/kerosene in the cement solidified body is low (less than 24%), The strength of the cured body is poor, the volume increase per unit volume is large, and the curing disposal efficiency, safety and economy are not good.

Contents of the invention

The main purpose of the present invention is to provide a new type of waste tributyl phosphate/kerosene cement solidified material and its cement solidified body preparation method, the technical problem to be solved is to make its cement-based solidified material have a large nuclear waste containment capacity , The nuclear waste disposal process is simple, the treatment cost is low, and there is no chemical pollution in the treatment process, so it is more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to the cement solidification material of a kind of waste tributyl phosphate/kerosene that the present invention proposes, by weight percentage, it comprises:

Portland cement: 45.0-65.0%;

Fly ash: 17.0-38.0%;

Silica fume: 4.0-6.0%;

Expanding agent: 4.0-6.0%;

Powdered water reducer: 0.8-1.2%;

Compatibility improver: 5.0-6.0%;

Solid oil material: 2.5-3.0%.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

Preferably, the cement solidified material of the aforementioned waste tributyl phosphate/kerosene, wherein the Portland cement is a high-alite Portland cement; the fly ash is a fine sinking bead of fly ash; the The expansion agent is calcium sulfoaluminate-calcium oxide concrete expansion agent; the powder water reducer is polycarboxylate high-performance powder water reducer; the compatibility improver is sodium montmorillonite stone; the oil-fixing material is organobentonite modified cyclodextrin-based high oil-absorbing resin.

The purpose of the present invention and the solution to its technical problems are also achieved by the following technical solutions. According to the preparation method of the cement solidified body of a kind of waste tributyl phosphate/kerosene proposed by the present invention, it comprises:

1) Mix the solid oil material and waste tributyl phosphate/kerosene at a weight ratio of 1:14-16 and let it stand, add a compatibility improving agent and stir to obtain the solid oil material-waste tributyl phosphate/kerosene mixture;

2) Mix the cement-based solidified slurry material and water at a weight ratio of 1:0.16-0.20, and stir to obtain the cement-based solidified slurry; wherein, the cement-based solidified slurry material includes Portland cement, fly ash, silicon Ash, expansion agent, powdered water reducer;

3) Mix the cement-based solidified slurry with the solid oil material-waste tributyl phosphate/kerosene mixture, and stir to obtain a cement solidified body of waste tributyl phosphate/kerosene;

Wherein, Portland cement, fly ash, silica fume, expansion agent, powdery water reducing agent, compatibility improving agent and solid oil material are cement solidified materials of waste tributyl phosphate/kerosene, and its weight percentage is:

Portland cement: 45.0-65.0%;

Fly ash: 17.0-38.0%;

Silica fume: 4.0-6.0%;

Expanding agent: 4.0-6.0%;

Powdered water reducer: 0.8-1.2%;

Compatibility improver: 5.0-6.0%;

Solid oil material: 2.5-3.0%.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

Preferably, the aforementioned preparation method of waste tributyl phosphate/kerosene solidified body of cement, wherein said Portland cement is high-alite Portland cement; said fly ash is fly ash fine pellets The expansion agent is calcium sulfoaluminate-calcium oxide concrete expansion agent; the powdered water reducer is polycarboxylate high-performance powdered water reducer; the compatibility improving agent is sodium quality montmorillonite; the oil-fixing material is organobentonite modified cyclodextrin-based high oil-absorbing resin.

Preferably, the aforementioned method for preparing waste tributyl phosphate/kerosene cement solidified body, wherein the stirring speed in step 1) is 6-8m/s.

Preferably, the aforementioned method for preparing waste tributyl phosphate/kerosene cement solidified body, wherein the stirring speed in step 2) is 14-18m/s.

Preferably, the aforementioned method for preparing waste tributyl phosphate/kerosene cement solidified body, wherein the stirring speed in step 3) is 9-12m/s.

Preferably, the aforementioned method for preparing waste tributyl phosphate/kerosene solidified cement body, wherein the volume inclusion capacity of the waste tributyl phosphate/kerosene cement solidified body is 42-50%.

By means of the above-mentioned technical scheme, the preparation method of the cement solidified material of waste tributyl phosphate/kerosene and its cement solidified body of the present invention has the following advantages at least:

1) The present invention adopts solid oil material and compatibility improving agent, has improved the compatibility of waste tributyl phosphate/kerosene and cement, and the inclusion capacity is improved to 42-50%, greatly reduces the volume increase in solidification process It reduces the space and cost of post-processing, and has significant economic benefits;

2) The cement solidified body of the present invention has a low leaching rate of nuclide ions, the leaching rate of Cs(42d) is 1.5-4.9×10 ^-4 cm/d, and the leaching rate of Ce(42d) is 0.76-4.5×10 ^-6 cm/d The compressive strength is 13.2-17.2MPa; the impact resistance, immersion resistance and freeze-thaw resistance performance meet GB14569.1-2011 "performance requirements for low and medium level radioactive waste solidified body - cement solidified body" and GB7023-86 "radioactive The various indicators of the long-term leaching test of waste solidified body have excellent performance;

3) The preparation method of the present invention is simple, the process has no chemical pollution, no radioactivity, no light pollution, and low noise, and is applicable to the actual production process.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention will be described in detail below.

Detailed ways

For further elaborating the technical means and effect that the present invention takes for reaching the predetermined invention purpose, below in conjunction with preferred embodiment, to the preparation of the cement solidification material of waste tributyl phosphate/kerosene and cement solidification body thereof according to the present invention The specific implementation, structure, features and effects of the method are described in detail below. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

A kind of cement solidified material of waste tributyl phosphate/kerosene that one embodiment of the present invention proposes, in weight percent, it comprises:

Portland cement: 45.0-65.0%;

Fly ash: 17.0-38.0%;

Silica fume: 4.0-6.0%;

Expanding agent: 4.0-6.0%;

Powdered water reducer: 0.8-1.2%;

Compatibility improver: 5.0-6.0%;

Solid oil material: 2.5-3.0%.

Among them, Portland cement, fly ash, silica fume, expansion agent, and powdered water reducer are cement-based solidified slurry materials; three major components are cement-based solidified slurry material, compatibility improver and solid oil material Individually packaged.

Preferably, the Portland cement is P·I52.5 High Alite Portland cement, the weight content of tricalcium silicate is 68-71%, the weight content of tricalcium aluminate is 6-7%, and the weight content of free calcium oxide is less than 0.8%, the weight content of magnesium oxide is less than 3.5%, and the Blaine specific surface area is (420±10)m ² /kg.

Preferably, the fly ash is fly ash fine pellets, fineness d ₅₀ ≤ 3 μm, d ₉₅ ≤ 10 μm, water demand less than 90%, 28-day activity index greater than 110%, 90-day activity index greater than 120%.

Preferably, the silica fume meets the requirements of the GB/T 27690-2011 standard, the _SiO2 weight content is not less than 96%, the ignition loss is less than 1.0wt%, and the specific surface area (BET method) is (23± ² )m2/g. The water content is less than 115%, and the 28d activity index is 97-98%.

Preferably, the expansion agent is a calcium sulfoaluminate-calcium oxide concrete expansion agent that meets the requirements of the GB 23439-2009 standard, and the main mineral components are: (by weight percentage) f-CaO: 40-45%; CaSO ₄ : 15 -20%, Absolute moisture expansion, 7 days limit expansion rate in water 0.08-0.12%, preferably 0.10%. Make full use of the moisture-absolute expansion characteristics of the expansion agent to solve the volume shrinkage of the cement solidified body and prevent the cement solidified body from detaching from the disposal bucket.

Preferably, the powdery water reducer is a polycarboxylate high-performance powdery water reducer, preferably a shrinkage reduction-early strength composite polycarboxylate water reducer, the water reducing rate is greater than 35% by weight, and the shrinkage of concrete is reduced by more than Equal to 30%, room temperature curing 12h compressive strength ratio is greater than or equal to 300%.

The compatibility improving agent is sodium montmorillonite, the blue absorption amount is 42-43, the weight content of silica is not less than 60%, the weight content of aluminum oxide is not less than 15%, and the fineness is 600-800 mesh, preferably 700 mesh . Sodium montmorillonite improves the compatibility of solid oil materials, waste tributyl phosphate/kerosene and cement, and has strong selective physical adsorption capacity for nuclide ions Cs and Ce, increasing the nuclide content of cement-based solidified materials. Ionic curing ability.

The oil-fixing material is organic bentonite modified cyclodextrin-based high oil-absorbing resin, particle size distribution 0.3-0.6mm, translucent beads, oil absorption ratios for kerosene and tributyl phosphate are 22 g/g and 16 g/g respectively , The oil retention rate is above 95% (weight content). Modified by organic bentonite, in addition to increasing the oil-fixing capacity, it also has a strong physical adsorption capacity for nuclide ions Cs and Ce.

Another embodiment of the present invention proposes a kind of preparation method of the cement solidification body of waste tributyl phosphate/kerosene, it comprises:

1) Put the solid oil material and waste tributyl phosphate/kerosene into the disposal barrel at a weight ratio of 1:14-16, mix and stand for 3 hours, add a compatibility improver, stir for 4-6 minutes, and obtain the solid oil material-waste phosphoric acid Tributyl ester/kerosene blend;

2) Mix the cement-based solidified slurry material and water at a weight ratio of 1:0.16-0.20, place it in a high-speed pulper, and stir for 4-6 minutes to obtain a cement-based solidified slurry; wherein, the cement-based solidified slurry material Including Portland cement, fly ash, silica fume, expansion agent, powdered water reducer;

3) Add the cement-based solidified slurry into the disposal barrel, mix it with the solid oil material-waste tributyl phosphate/kerosene mixture, and stir for 3-5 minutes to obtain a cement solidified body of waste tributyl phosphate/kerosene;

Portland cement, fly ash, silica fume, expansion agent, powdery water reducing agent, compatibility improving agent and solid oil material are the cement solidified material of waste tributyl phosphate/kerosene, and its weight percentage is:

Portland cement: 45.0-65.0%;

Fly ash: 17.0-38.0%;

Silica fume: 4.0-6.0%;

Expanding agent: 4.0-6.0%;

Powdered water reducer: 0.8-1.2%;

Compatibility improver: 5.0-6.0%;

Solid oil material: 2.5-3.0%.

Preferably, the linear velocity of the stirring blade in step 1) is 6-8m/s, preferably 7m/s.

Preferably, the linear velocity of the stirring blades of the high-speed pulper in step 2) is 14-18m/s, preferably 16m/s.

Preferably, in step 3), the rotational speed of the agitator is 600-800 rpm, and the linear velocity of the stirring blade is 9-12m/s, preferably 10m/s.

The waste tributyl phosphate/kerosene in this example is non-radioactive simulated medium and low-level waste tributyl phosphate/kerosene, which is made by mixing the analytical reagent tributyl phosphate and anhydrous kerosene at a volume ratio of 3:7, and Doped with Cs and Ce with an activity equivalent of 10 ^5-6 Bq, among which Ce is used to simulate nuclide ²³⁹ Pu.

An embodiment of the present invention proposes a cement-cured material of waste tributyl phosphate/kerosene, and the components of the cement-cured material of waste tributyl phosphate/kerosene in Examples 1-12 are shown in Table 1.

The component (weight percentage %) of the cement solidification material of table 1 waste tributyl phosphate/kerosene

Example 1

One embodiment of the present invention proposes a kind of preparation method of the cement solidification body of waste tributyl phosphate/kerosene, it comprises:

1) Add 2.5kg of solid oil material super oil-absorbing resin and 35.0kg of waste tributyl phosphate/kerosene into the disposal barrel, mix and let stand for 3 hours, add 5.0kg of compatibility improving agent sodium montmorillonite, stir for 5 minutes, stir the blade line Speed 8m/s, obtain solid oil material-waste tributyl phosphate/kerosene mixture;

2) Mix 45.0kg Portland cement, 35.7kg fly ash, 6.0kg silica fume, 5.0kg expansion agent and 0.8kg powdered water reducing agent to make 92.5kg cement-based solidified slurry material, and 18.5kg water Place in a high-speed pulping machine, stir for 4 minutes, and the linear speed of the stirring blade of the high-speed pulping machine is 18m/s, to obtain a cement-based solidified slurry;

3) Add the cement-based solidified slurry into the disposal barrel, mix it with the solid oil material-waste tributyl phosphate/kerosene mixture, stir the blade at a linear speed of 10m/s, stir for 4min, and cure and solidify to obtain waste tributyl phosphate / Kerosene cement solidification body.

Prepare a Φ50mm×50mm sample, and maintain it to the corresponding age at a temperature of 25±5°C, in accordance with GB14569.1-2011 "Performance Requirements for Low and Medium Level Radioactive Waste Solidified Body-Cement Solidified Body" and GB 7023-86 "Long-term leaching test of solidified radioactive waste" conducts various performance tests. Under 42% volume inclusion capacity, the compressive strength is 16.5 MPa, the impact resistance, freeze-thaw resistance and immersion resistance are qualified, the leaching rate of Cs(42d) is 2.5×10 ^-4 cm/d, and the leaching rate of Ce(42d) is 7.6 ×10 ^-7 cm/d.

Example 2

One embodiment of the present invention proposes a kind of preparation method of the cement solidification body of waste tributyl phosphate/kerosene, it comprises:

1) Add 2.6kg of solid oil material high oil-absorbing resin and 39.0kg of waste tributyl phosphate/kerosene into the disposal barrel and mix for 3 hours, add 5.2kg of compatibility improving agent sodium montmorillonite, stir for 4 minutes, and stir the blade line Speed 7m/s, obtain solid oil material-waste tributyl phosphate/kerosene mixture;

2) Mix 50.0kg Portland cement, 32.3kg fly ash, 5.0kg silica fume, 4.0kg expansion agent and 0.9kg powdered water reducing agent to make 92.2kg cement-based solidified slurry material, and 17.5kg water Place in a high-speed pulping machine, stir for 4 minutes, and the linear speed of the stirring blade of the high-speed pulping machine is 16m/s, to obtain a cement-based solidified slurry;

3) Add the cement-based solidified slurry to the disposal barrel, mix it with the solid oil material-waste tributyl phosphate/kerosene mixture, stir the stirring blade at a linear speed of 12m/s, stir for 3min, and cure and solidify to obtain waste tributyl phosphate / Kerosene cement solidification body.

Prepare a Φ50mm×50mm sample, and maintain it to the corresponding age at a temperature of 25±5°C, in accordance with GB14569.1-2011 "Performance Requirements for Low and Medium Level Radioactive Waste Solidified Body - Cement Solidified Body" and GB 7023- 86 "Long-term leaching test of solidified radioactive waste" conducts various performance tests. Under 44% volume inclusion capacity, the compressive strength is 14.5 MPa, the impact resistance, freeze-thaw resistance and immersion resistance are qualified, the leaching rate of Cs(42d) is 2.7×10 ^-4 cm/d, and the leaching rate of Ce(42d) is 8.6 ×10 ^-7 cm/d.

Example 3

One embodiment of the present invention proposes a kind of preparation method of the cement solidification body of waste tributyl phosphate/kerosene, it comprises:

1) Add 2.7kg of solid oil material super oil-absorbing resin and 43.2kg of waste tributyl phosphate/kerosene into the disposal barrel and mix for 3 hours, add 5.4kg of compatibility improving agent sodium montmorillonite, stir for 4 minutes, and stir Speed 7m/s, obtain solid oil material-waste tributyl phosphate/kerosene mixture;

2) Mix 55.0kg Portland cement, 25.9kg fly ash, 4.0kg silica fume, 6.0kg expansion agent and 1.0kg powdered water reducing agent to make 91.9kg cement-based solidified slurry material, and 17.5kg water Place in a high-speed pulping machine, stir for 6 minutes, and the linear speed of the stirring blade of the high-speed pulping machine is 18m/s, to obtain a cement-based solidified slurry;

3) Add the cement-based solidified slurry into the disposal barrel, mix it with the solid oil material-waste tributyl phosphate/kerosene mixture, stir the stirring blade at a linear speed of 9m/s, stir for 5min, and cure and solidify to obtain waste tributyl phosphate / Kerosene cement solidification body.

Prepare a Φ50mm×50mm sample, and maintain it to the corresponding age at a temperature of 25±5°C, in accordance with GB14569.1-2011 "Performance Requirements for Low and Medium Level Radioactive Waste Solidified Body-Cement Solidified Body" and GB 7023-86 "Long-term leaching test of solidified radioactive waste" conducts various performance tests. Under 47% volume inclusion capacity, the compressive strength is 16.2MPa, the impact resistance, freeze-thaw resistance and immersion resistance are qualified, the leaching rate of Cs(42d) is 3.8×10 ^-4 cm/d, and the leaching rate of Ce(42d) is 1.1 ×10 ^-6 cm/d.

Example 4

One embodiment of the present invention proposes a kind of preparation method of the cement solidification body of waste tributyl phosphate/kerosene, it comprises:

1) Add 2.8kg of solid oil material high oil-absorbing resin and 44.8kg of waste tributyl phosphate/kerosene into the disposal barrel, mix and let stand for 3 hours, add 5.6kg of compatibility improving agent sodium montmorillonite, stir for 5 minutes, and stir the blade line Speed 7m/s, obtain solid oil material-waste tributyl phosphate/kerosene mixture;

2) Mix 60.0kg Portland cement, 20.0kg fly ash, 5.5kg silica fume, 5.0kg expansion agent and 1.1kg powdered water reducing agent to make 91.6kg cement-based solidified slurry material, and 15.6kg water Place in a high-speed pulping machine, stir for 5 minutes, and the linear speed of the stirring blade of the high-speed pulping machine is 15m/s, to obtain a cement-based solidified slurry;

3) Add the cement-based solidified slurry into the disposal barrel, mix it with the solid oil material-waste tributyl phosphate/kerosene mixture, stir the blade at a linear speed of 10m/s, stir for 4min, and cure and solidify to obtain waste tributyl phosphate / Kerosene cement solidification body.

Prepare a Φ50mm×50mm sample, and maintain it to the corresponding age at a temperature of 25±5°C, in accordance with GB14569.1-2011 "Performance Requirements for Low and Medium Level Radioactive Waste Solidified Body-Cement Solidified Body" and GB 7023-86 "Long-term leaching test of solidified radioactive waste" conducts various performance tests. Under 48% volume inclusion capacity, the compressive strength is 13.9MPa, the impact resistance, freeze-thaw resistance and immersion resistance are qualified, the leaching rate of Cs(42d) is 4.9×10 ^-4 cm/d, and the leaching rate of Ce(42d) is 4.5 ×10 ^-6 cm/d.

Example 5

One embodiment of the present invention proposes a kind of preparation method of the cement solidification body of waste tributyl phosphate/kerosene, it comprises:

1) Add 3.0kg of solid oil material high oil-absorbing resin and 48.0kg of waste tributyl phosphate/kerosene into the disposal barrel, mix and let stand for 3 hours, add 5.8kg of compatibility improving agent sodium montmorillonite, stir for 5 minutes, stir the blade line Speed 7m/s, obtain solid oil material-waste tributyl phosphate/kerosene mixture;

2) Mix 65.0kg Portland cement, 17.0kg fly ash, 4.0kg silica fume, 4.0kg expansion agent and 1.2kg powdered water reducing agent to make 91.2kg cement-based solidified slurry material, and 14.6kg water Place in a high-speed pulping machine, stir for 6 minutes, and the linear speed of the stirring blade of the high-speed pulping machine is 16m/s, to obtain a cement-based solidified slurry;

3) Add the cement-based solidified slurry into the disposal barrel, mix it with the solid oil material-waste tributyl phosphate/kerosene mixture, stir the blade at a linear speed of 10m/s, stir for 4min, and cure and solidify to obtain waste tributyl phosphate / Kerosene cement solidification body.

Prepare a Φ50mm×50mm sample, and maintain it to the corresponding age at a temperature of 25±5°C, in accordance with GB14569.1-2011 "Performance Requirements for Low and Medium Level Radioactive Waste Solidified Body-Cement Solidified Body" and GB 7023-86 "Long-term leaching test of solidified radioactive waste" conducts various performance tests. Under 50% volume inclusion capacity, the compressive strength is 17.8 MPa, the impact resistance, freeze-thaw resistance and immersion resistance are qualified, the leaching rate of Cs(42d) is 4.4×10 ^-4 cm/d, and the leaching rate of Ce(42d) is 3.8 ×10 ^-6 cm/d.

The preparation method step of the cement solidified body of waste tributyl phosphate/kerosene of embodiment 6-12 is as embodiment 1-5, and the cement solidified material component of waste tributyl phosphate/kerosene is as shown in Table 1, cement solidified body The preparation process parameters are shown in Table 2.

Table 2 The preparation process parameters of waste tributyl phosphate/kerosene cement solidified body

Perform various performance tests according to GB14569.1-2011 "Performance Requirements for Low and Medium Level Radioactive Waste Solidified Body-Cement Solidified Body" and GB7023-86 "Long-term Leaching Test of Radioactive Waste Solidified Body", Example 1-12 waste tributyl phosphate Table 3 shows the test results of grease/kerosene cement solidified body.

Table 3 waste tributyl phosphate/kerosene cement solidified body test results

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the present invention. within the scope of the technical solution of the invention.

Claims (6)

1. a kind of cement solidification material of waste phosphoric acid tributyl/kerosene, which is characterized in that by weight percentage comprising：

Portland cement：45.0-65.0%；

Flyash：17.0-38.0%；

Silicon ash：4.0-6.0%；

Swelling agent：4.0-6.0%；

Powdery water-reducing agent：0.8-1.2%；

Compatibility improvement agent：5.0-6.0% is sodium matter montmorillonite；

Gu light wood material：2.5-3.0% is organobentonite modified cyclodextrin base high oil-absorbing resin；

The solidified cement body of the waste phosphoric acid tributyl/kerosene, preparation method include：

It 1) will solid light wood material and waste phosphoric acid tributyl/kerosene by weight 1:14-16 mixing is stood, and Compatibility improvement agent is added, Stirring obtains solid light wood material-waste phosphoric acid tributyl/kerosene mixture；

2) by cement-based solidified paste materials and water by weight 1:0.16-0.20 is mixed, and cement-based solidified slurry is made in stirring Body；Wherein, cement-based solidified paste materials include portland cement, flyash, silicon ash, swelling agent, powdery water-reducing agent；

3) the cement-based solidified slurry is mixed with solid light wood material-waste phosphoric acid tributyl/kerosene mixture, stirs, obtains The solidified cement body of waste phosphoric acid tributyl/kerosene.

2. the cement solidification material of waste phosphoric acid tributyl/kerosene according to claim 1, which is characterized in that the silicon Acid salt cement is high alite silicate cement；The flyash is the fine heavy pearl of flyash；The swelling agent is sulphur aluminium Sour calcium-calcium oxide cement expansive material；The powdery water-reducing agent is polycarboxylic acid series high-performance powdery water-reducing agent.

3. the preparation method of the solidified cement body of waste phosphoric acid tributyl/kerosene according to claim 1, which is characterized in that The speed of stirring described in step 1) is 6-8m/s.

4. the preparation method of the solidified cement body of waste phosphoric acid tributyl/kerosene according to claim 1, which is characterized in that The speed of stirring described in step 2) is 14-18m/s.

5. the preparation method of the solidified cement body of waste phosphoric acid tributyl/kerosene according to claim 1, which is characterized in that The speed of stirring described in step 3) is 9-12m/s.

6. the preparation method of the solidified cement body of waste phosphoric acid tributyl/kerosene according to claim 1, which is characterized in that The volume inclusion quantity of the solidified cement body of the waste phosphoric acid tributyl/kerosene is 42-50%.