CN107555931A - A kind of method of comprehensive utilization of polysilicon production waste - Google Patents
A kind of method of comprehensive utilization of polysilicon production waste Download PDFInfo
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- CN107555931A CN107555931A CN201710893325.0A CN201710893325A CN107555931A CN 107555931 A CN107555931 A CN 107555931A CN 201710893325 A CN201710893325 A CN 201710893325A CN 107555931 A CN107555931 A CN 107555931A
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- China
- Prior art keywords
- waste residue
- parts
- elution
- waste
- polysilicon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to waste residue resource to utilize technical field, and more particularly to a kind of polysilicon waste residue resource, which utilizes, prepares building block technical field.Caused waste material enters elution pond in polysilicon production process, after hydrolysis, alkali lye spray-absorption, neutralization, waste residue is preliminarily formed in pond is eluted, by the quality 1~3 of elution waste residue and water：1 ratio adds running water, is stirred to obtain slurry；Following components is added in feed liquid：20 26 parts of phosphorus ore slag, 17 19 parts of organic silicon waste residue slurry, 14 16 parts of natural siderite, 4 11 parts of cement, 57 parts of gypsum, press filtration obtains non-solubility residue, preserve, the compression molding after rolling is uniform, and a kind of baking-free type building block prepared by steam press maintenance.Prepare building block and consume substantial amounts of polysilicon waste residue and CHARACTERISTICS OF TAILINGS SAND, waste residue utilization rate turns waste into wealth, change pollution sources are available resources, have significant energy conservation and environmental protection benefit up to more than 86%.
Description
Technical field
The invention belongs to waste residue resource to utilize technical field, and more particularly to a kind of polysilicon waste residue resource utilizes preparation
Building block technical field.
Background technology
Polysilicon waste residue is to handle a kind of industrial solid castoff deposited during production of polysilicon sewage, main component
It is elemental silicon, the flocculant polyacrylamide that uses when a small amount of CaCO3, the non-type thing containing Al, Fe and processing sewage
(PAM).Due to including the impurity such as organic matter in polysilicon waste residue, it is recycled and serves limitation, processing primarily now
Means are exactly landfill and stacked.The stacking of polysilicon waste residue has seriously endangered the environment on periphery, such as air, soil, underground water,
Almost not even a blade of grass grows in the place that polysilicon waste residue is stacked.With the increasing of Environmental protection and the environmental consciousness of citizen
Enhancing, stacks and the processing mode of landfill has obviously been unsatisfactory for social development and needs.Not yet effectively extensive place at present
The mode of the discarded object is managed, the serious development for hindering polysilicon industry, finds out a scientific and effective processing mode, and it is right
Its recycling, tool are of great significance.
At present, the cultivated area in China is constantly reduced, and clay resource is at full stretch, and as the sintering of traditional architecture building block
The production of clay brick needs to consume substantial amounts of clay and coal resources, while can discharge substantial amounts of CO in process of production2And powder
The pollutants such as dirt, therefore conventional sintering clay brick and the strategy of sustainable development for not meeting country, have received government department
Limitation.However, China is currently under the peak period of infrastructure, the demand to construction material is self-evident.Therefore,
It is necessary to carry out recycling recycling to polysilicon waste residue.
The content of the invention
The present invention is to overcome problems of the prior art, there is provided a kind of polysilicon solid waste residue resource processing side
Method, building block is prepared using polysilicon waste residue, so that the environmental pollution that the discharge and zone of illuviation for solution polysilicon waste residue come
Problem provides a kind of technological approaches, while can also produce the building block of excellent performance, meets market to New Building Materials
Demand..
The present invention adopts the following technical scheme that to solve above-mentioned problems of the prior art.
A kind of method of comprehensive utilization of polysilicon production waste, it is characterised in that comprise the following steps：
S1, caused waste material enters elution pond in polysilicon production process, after hydrolysis, alkali lye spray-absorption, neutralization,
Waste residue, the isolated elution waste residue of press filtration are preliminarily formed in elution pond, filtrate returns to elution pond and recycled；
S2, the elution waste residue that step S1 press filtrations are obtained put into rotary mixer, by the quality 1~3 of elution waste residue and water：
1 ratio adds running water, is stirred to obtain slurry；
S3, following components is added in the feed liquid that will be obtained in step S2：Phosphorus ore slag 20-26 parts, organic silicon waste residue slurry 17-19
Part, natural siderite 14-16 parts, cement 4-11 parts, gypsum 5-7 parts, press filtration obtain non-solubility residue, preserve；
S4, the compression molding after rolling is uniform, and a kind of baking-free type building block prepared by steam press maintenance.
Further, the isolated elution waste residue of press filtration described in step S1 includes sodium metasilicate, silica, silicon
Powder, iron hydroxide, calcium hydroxide, calcium silicates, aluminium hydroxide, sodium metaaluminate, sodium aluminosilicate, sodium chloride and insoluble machinery are miscellaneous
Matter.
Further, elution waste residue pH value isolated described in step S1 be 9~10, moisture be 30~50%.
Further, water is slowly added into well mixed by step S4 in the 8.0%-14% ratios of raw material gross mass
In powder, digest 0.5 hour, moist bulk material after digestion is filled up into mould, is molded under 10~20MPa briquetting pressures
Type.
Relative to prior art, the present invention achieves following beneficial effect：
1. preparing building block consumes substantial amounts of polysilicon waste residue and CHARACTERISTICS OF TAILINGS SAND, waste residue utilization rate becomes up to more than 86%
Waste be changed into values, and change pollution sources are available resources, has significant energy conservation and environmental protection benefit；
2. preparation do not need high temperature, compression molding is being carried out under 10~20MPa briquetting pressures, with dutch brick (900~
1100 DEG C) to compare, energy consumption is low, equipment investment is small, simple to operate.
Embodiment
Below in conjunction with embodiments of the invention, the technical scheme of invention is clearly and completely described.Obviously, institute
The embodiment of description is only the part of the embodiment of the present invention, rather than whole embodiments.Based on embodiments of the invention,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, belongs to this hair
The scope of bright protection.
Embodiment 1
Building block is prepared according to following steps：
S1, caused waste material enters elution pond in polysilicon production process, after hydrolysis, alkali lye spray-absorption, neutralization,
Waste residue, the isolated elution waste residue of press filtration are preliminarily formed in elution pond, filtrate returns to elution pond and recycled；
S2, the elution waste residue that step S1 press filtrations are obtained put into rotary mixer, by the quality 1~3 of elution waste residue and water：
1 ratio adds running water, is stirred to obtain slurry；
S3, following components is added in the feed liquid that will be obtained in step S2：20 parts of phosphorus ore slag, organic silicon waste residue slurry 17 part, day
Right 14 parts of siderite, 11 parts of cement, 5 parts of gypsum, press filtration obtain non-solubility residue, preserve；
S4, the compression molding after rolling is uniform, and a kind of baking-free type building block prepared by steam press maintenance.
It is as follows to measure its performance：
Compression strength is 10.2MPa, rupture strength 2.8MPa.
Embodiment 2
Building block is prepared according to following steps：
S1, caused waste material enters elution pond in polysilicon production process, after hydrolysis, alkali lye spray-absorption, neutralization,
Waste residue, the isolated elution waste residue of press filtration are preliminarily formed in elution pond, filtrate returns to elution pond and recycled；
S2, the elution waste residue that step S1 press filtrations are obtained put into rotary mixer, by the quality 1~3 of elution waste residue and water：
1 ratio adds running water, is stirred to obtain slurry；
S3, following components is added in the feed liquid that will be obtained in step S2：26 parts of phosphorus ore slag, organic silicon waste residue slurry 19 part, day
Right 16 parts of siderite, 4 parts of cement, 7 parts of gypsum, press filtration obtain non-solubility residue, preserve；
S4, the compression molding after rolling is uniform, and a kind of baking-free type building block prepared by steam press maintenance.
It is as follows to measure its performance：
Compression strength is 12.3MPa, rupture strength 2.6MPa.
Embodiment 3
Building block is prepared according to following steps：
S1, caused waste material enters elution pond in polysilicon production process, after hydrolysis, alkali lye spray-absorption, neutralization,
Waste residue, the isolated elution waste residue of press filtration are preliminarily formed in elution pond, filtrate returns to elution pond and recycled.
S2, the elution waste residue that step S1 press filtrations are obtained put into rotary mixer, by the quality 1~3 of elution waste residue and water：
1 ratio adds running water, is stirred to obtain slurry；
S3, following components is added in the feed liquid that will be obtained in step S2：24 parts of phosphorus ore slag, organic silicon waste residue slurry 18 part, day
Right 15 parts of siderite, 9 parts of cement, 6 parts of gypsum, press filtration obtain non-solubility residue, preserve；
S4, the compression molding after rolling is uniform, and a kind of baking-free type building block prepared by steam press maintenance.
It is as follows to measure its performance：
Compression strength is 11.3MPa, rupture strength 2.7MPa.
Claims (4)
1. a kind of method of comprehensive utilization of polysilicon production waste, it is characterised in that comprise the following steps：
S1, caused waste material enters elution pond in polysilicon production process, after hydrolysis, alkali lye spray-absorption, neutralization, is eluting
Waste residue, the isolated elution waste residue of press filtration are preliminarily formed in pond, filtrate returns to elution pond and recycled；
S2, the elution waste residue that step S1 press filtrations are obtained put into rotary mixer, by the quality 1~3 of elution waste residue and water：1
Ratio adds running water, is stirred to obtain slurry；
S3, following components is added in the feed liquid that will be obtained in step S2：Phosphorus ore slag 20-26 parts, organic silicon waste residue slurry 17-19 parts,
Natural siderite 14-16 parts, cement 4-11 parts, gypsum 5-7 parts, press filtration obtain non-solubility residue, preserved；
S4, the compression molding after rolling is uniform, and a kind of baking-free type building block prepared by steam press maintenance.
2. production of polysilicon waste residue method of comprehensive utilization according to claim 1, it is characterised in that press filtration described in step S1
Isolated elution waste residue includes sodium metasilicate, silica, silica flour, iron hydroxide, calcium hydroxide, calcium silicates, hydrogen-oxygen
Change aluminium, sodium metaaluminate, sodium aluminosilicate, sodium chloride and insoluble mechanical admixture.
3. the method for comprehensive utilization of polysilicon production waste according to claim 1, it is characterised in that divide described in step S1
Be 9~10 from obtained elution waste residue pH value, moisture be 30~50%.
4. the method for comprehensive utilization of polysilicon production waste according to claim 1, it is characterised in that step S4 presses former material
Water is slowly added into well mixed powder by the 8.0%-14% ratios of material gross mass, is digested 0.5 hour, will be damp after digestion
Wet bulk material fills up mould, and compression molding is carried out under 10~20MPa briquetting pressures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893325.0A CN107555931A (en) | 2017-09-28 | 2017-09-28 | A kind of method of comprehensive utilization of polysilicon production waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710893325.0A CN107555931A (en) | 2017-09-28 | 2017-09-28 | A kind of method of comprehensive utilization of polysilicon production waste |
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| Publication Number | Publication Date |
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| CN107555931A true CN107555931A (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710893325.0A Withdrawn CN107555931A (en) | 2017-09-28 | 2017-09-28 | A kind of method of comprehensive utilization of polysilicon production waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218271A (en) * | 2018-01-30 | 2018-06-29 | 徐州中联混凝土有限公司 | A kind of preparation method of the siliceous cement raw material of high hydration activity |
| CN110734072A (en) * | 2018-07-19 | 2020-01-31 | 新特能源股份有限公司 | Method and device for recycling solid slag waste in polycrystalline silicon production |
-
2017
- 2017-09-28 CN CN201710893325.0A patent/CN107555931A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218271A (en) * | 2018-01-30 | 2018-06-29 | 徐州中联混凝土有限公司 | A kind of preparation method of the siliceous cement raw material of high hydration activity |
| CN110734072A (en) * | 2018-07-19 | 2020-01-31 | 新特能源股份有限公司 | Method and device for recycling solid slag waste in polycrystalline silicon production |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180109 |
|
| WW01 | Invention patent application withdrawn after publication |