CN106733206A - A kind of application of ultrasonic wave during scheelite heating stirring reagent removal - Google Patents
A kind of application of ultrasonic wave during scheelite heating stirring reagent removal Download PDFInfo
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- 238000003756 stirring Methods 0.000 title claims abstract description 55
- 238000010438 heat treatment Methods 0.000 title claims abstract description 54
- 239000003153 chemical reaction reagent Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 claims abstract description 47
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 27
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000003814 drug Substances 0.000 claims description 40
- 229940079593 drug Drugs 0.000 claims description 34
- 238000010408 sweeping Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims 1
- 238000005188 flotation Methods 0.000 abstract description 17
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000010792 warming Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 21
- 239000011707 mineral Substances 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000012141 concentrate Substances 0.000 description 9
- 238000011084 recovery Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000010790 dilution Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- 229910021532 Calcite Inorganic materials 0.000 description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 5
- 239000010436 fluorite Substances 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 4
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- ZXOKVTWPEIAYAB-UHFFFAOYSA-N dioxido(oxo)tungsten Chemical compound [O-][W]([O-])=O ZXOKVTWPEIAYAB-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
技术领域technical field
本发明涉及一种超声波在白钨矿加温搅拌脱药过程中的应用，属于选矿技术领域。The invention relates to the application of ultrasonic waves in the process of heating and stirring scheelite to remove drugs, and belongs to the technical field of mineral processing.
背景技术Background technique
钨是一种最常见的具有熔点高、硬度高的有色金属，在民生、工业、国防中广泛使用，对国家经济有巨大贡献。据统计，随着近年的工业发展，对钨的需求越来越大，每年有高达6.23万吨的原生金属钨的消耗。中国在全球作为钨的资源最多的国家，在2008年，现已查明的以三氧化钨记的基础储量有235万吨，黑钨矿只占很少的一部分为20%左右，其余的都为较难选别的白钨矿高达170万吨，随着黑钨矿因其容易通过重选等方式易于选别而日渐稀少，白钨矿代替黑钨矿成为我国钨金属的主要原材料。然而在我国的白钨矿平均品味较低，只有很少一部分的富矿，共、伴生矿多，而单一的白钨矿矿种少，因此在存在可浮性很好的萤石、方解石等钙质脉石矿物时使白钨矿的选别变得极为困难，使原本就缺乏的白钨矿资源更加难以进行开发利用。Tungsten is the most common non-ferrous metal with high melting point and high hardness. It is widely used in people's livelihood, industry and national defense, and has made great contributions to the national economy. According to statistics, with the industrial development in recent years, the demand for tungsten is increasing, and there is an annual consumption of up to 62,300 tons of primary metal tungsten. China is the country with the most tungsten resources in the world. In 2008, the proven basic reserves of tungsten trioxide were 2.35 million tons, wolframite only accounted for a small part of about 20%, and the rest were all Scheelite, which is more difficult to separate, is as high as 1.7 million tons. As wolframite is easy to be separated through gravity separation and other methods, it is becoming increasingly rare. Scheelite has replaced wolframite as the main raw material of tungsten metal in my country. However, the average grade of scheelite in our country is low, there are only a few rich ores, there are many common and associated ores, and there are few single scheelite minerals. The separation of scheelite becomes extremely difficult when the gangue minerals are used, which makes it more difficult to develop and utilize the already scarce scheelite resources.
在目前钨资源储量中，保有的储量中三氧化钨品位小于0.5 %的有80 %，而在白钨矿的工业储量中，品位大于0.5 %的仅占2 %左右。由于我国白钨矿资源的品位低，成分复杂，共、伴生矿物多，所以选矿工艺复杂，综合回收技术较为困难。Among the current reserves of tungsten resources, 80% of the retained reserves have a grade of tungsten trioxide less than 0.5%, while in the industrial reserves of scheelite, only about 2% have a grade of more than 0.5%. Due to the low grade of scheelite resources in my country, complex components, and many co- and associated minerals, the beneficiation process is complicated and the comprehensive recovery technology is relatively difficult.
浮选是回收和选别白钨矿的重要方法，由于白钨矿中脉石种类的多样，通常将根据主要脉石的种类将白钨矿分为脉石主要为含硅矿物的石英（或硅酸盐）型，脉石主要为含钙矿物的方解石、萤石（或钙质）型的白钨两种主要的白钨矿资源。石英型的白钨矿矿石，脉石和白钨矿性质差异明显一般较易选；含钙质脉石矿物型白钨矿较为难选，主要是因为脉石矿物和白钨矿同属于钙质矿物，疏水性极为相似，在浮选中很难被抑制。对这类白钨矿矿石的处理方法主要是通过温度超过80℃的加温法，该方法有两大部分组成，包括常温下的浮选粗选和加温搅拌脱药，在常温粗选作业中，通常使用Na2CO3、NaOH作为钙质脉石矿物的抑制剂及调整剂，尽可能的把白钨矿中的脉石除去；在加温搅拌脱药作业，将白钨矿粗精矿脱水浓缩后，添加大量的水玻璃，在90℃高温下在搅拌槽中通过强烈的长时间搅拌，使钙质脉石矿物更易于被水玻璃抑制，然后稀释常温浮选。Flotation is an important method for recovering and sorting scheelite. Due to the variety of gangue types in scheelite, usually scheelite is divided into quartz (or silica) according to the main gangue types. Salt) type, the gangue is mainly calcium-containing mineral calcite, fluorite (or calcium) type scheelite two main scheelite resources. Quartz-type scheelite ore, gangue and scheelite are obviously different in nature and generally easier to select; calcareous gangue mineral-type scheelite is more difficult to select, mainly because gangue minerals and scheelite belong to calcareous minerals , are very similar in hydrophobicity and are difficult to be suppressed in flotation. The processing method for this type of scheelite ore is mainly through the heating method with a temperature exceeding 80°C. This method consists of two parts, including flotation roughing at room temperature and heating and stirring to remove drugs. In the process, Na 2 CO 3 and NaOH are usually used as inhibitors and regulators of calcareous gangue minerals to remove the gangue in scheelite as much as possible; After the ore is dehydrated and concentrated, a large amount of water glass is added, and the calcareous gangue minerals are more likely to be inhibited by the water glass through strong and long-term stirring in the stirring tank at a high temperature of 90°C, and then diluted and floated at room temperature.
在我国大部分为方解石、萤石（或钙质）型的白钨矿，因此常温浮选-加温搅拌脱药工艺在我国白钨矿资源的利用上具有非常重要的地位，然而由于常温粗选段的抑制剂的抑制作用比较弱，导致钙质脉石矿物和白钨一起进入粗精矿中，使得粗精矿品位难以提升。白钨矿易与钙质脉石连生，细粒嵌布，通过加温搅拌来脱除脉石矿物上吸附的捕收剂和加温下增加水玻璃抑制脉石矿物就尤为重要。为获得良好的精选指标加温搅拌脱药时间过长常常大于1h，这使得选厂的能耗极大且大大降低了选厂的处理量，选厂成本居高不下。Most of the scheelite in our country is calcite, fluorite (or calcareous) type, so the normal temperature flotation-heating and stirring demedication process has a very important position in the utilization of scheelite resources in my country. The inhibiting effect of the selected inhibitor is relatively weak, causing calcareous gangue minerals and scheelite to enter the rough concentrate together, making it difficult to improve the grade of the rough concentrate. Scheelite is easy to grow together with calcareous gangue, and the fine particles are embedded in it. It is particularly important to remove the collector adsorbed on the gangue minerals by heating and stirring and to add water glass to inhibit the gangue minerals under heating. In order to obtain a good selection index, the time of heating and stirring to remove the drug is too long, usually longer than 1 hour, which makes the energy consumption of the dressing plant extremely large and greatly reduces the processing capacity of the dressing plant, and the cost of the dressing plant remains high.
通常白钨矿加温搅拌脱药过程常采用温度超过85℃的加温法，加温的方式常通过燃料燃烧加热水，使产生的高温水蒸汽通过管道对搅拌桶内的白钨矿矿浆进行加热，加温时间保持1h以上，将消耗大量的煤或其它燃料，使白钨矿加温搅拌过程成本增加。降低加温的温度、时间可以大大减少白钨矿加温搅拌脱药工程中的燃料成本。Usually, the process of heating and stirring the scheelite ore to remove the drug often adopts a heating method with a temperature exceeding 85°C. The heating method is often to heat water through fuel combustion, so that the high-temperature water vapor generated passes through the pipeline to process the scheelite slurry in the mixing tank. Heating, keeping the heating time for more than 1 hour will consume a large amount of coal or other fuels, which will increase the cost of the heating and stirring process of scheelite. Reducing the temperature and time of heating can greatly reduce the fuel cost in the heating and stirring demedication project of scheelite.
发明内容Contents of the invention
针对上述现有技术存在的问题及不足，本发明提供一种超声波在白钨矿加温搅拌脱药过程中的应用。本发明在白钨矿精选前高温搅拌脱药过程中加入超声波，只需要在70～85℃温度下就能获得较好的脱药效果，使在后续浮选中可以获得更高的回收率和精矿品位,本发明通过以下技术方案实现。Aiming at the problems and deficiencies in the above-mentioned prior art, the present invention provides an application of ultrasonic waves in the process of heating and stirring scheelite to remove drugs. In the present invention, ultrasonic wave is added in the process of high-temperature stirring and drug-removal before scheelite beneficiation, and a better drug-removal effect can be obtained only at a temperature of 70-85°C, so that a higher recovery rate can be obtained in subsequent flotation and concentrate grade, the present invention is realized through the following technical solutions.
一种超声波在白钨矿加温搅拌脱药过程中的应用，向白钨矿中依次加入GYR、NaOH、水玻璃进行调浆后，在搅拌过程中升温至70～85℃加热25～50min，同时超声波覆盖加温用搅拌槽体积的2/3以上，超声波的强度为0.3～1.5W/cm2。An application of ultrasonic waves in the process of heating and stirring scheelite to remove drugs. After adding GYR, NaOH, and water glass to the scheelite in sequence for slurry mixing, the temperature is raised to 70-85°C during the stirring process and heated for 25-50 minutes. At the same time, ultrasonic waves cover more than 2/3 of the volume of the stirring tank for heating, and the intensity of ultrasonic waves is 0.3-1.5 W/cm 2 .
所述白钨矿调浆后浓度为60～80wt.%。The concentration of the scheelite after pulping is 60-80wt.%.
所述GYR用量为1.5～2.5Kg/t白钨矿，NaOH固体用量为400～1000g/t白钨矿，水玻璃用量为35～75Kg/t白钨矿。The dosage of GYR is 1.5-2.5Kg/t scheelite, the dosage of NaOH solid is 400-1000g/t scheelite, and the dosage of water glass is 35-75Kg/t scheelite.
所述加温搅拌脱药后，在扫选中加入GYR用量为0.3～0.6Kg/t白钨矿。After the heating and stirring to remove the drug, the amount of GYR added in the sweeping is 0.3-0.6Kg/t scheelite.
本发明的原理为：在加温搅拌过程中用：一是超声波空化作用所产生的强烈的机械搅拌，加速了捕收剂从脉石表面脱除，以及对矿物表面的清洗作用增加水玻璃与脉石矿物的有效作用面积；二超声波的空化作用会在矿物表面的反应微区产生局部高温高压，可以提高矿物表面与药剂的反应速率，有助于捕收剂从脉石矿物表面脱除和抑制剂的吸附，可以降低反应所需的体相温度。The principle of the present invention is: in the process of heating and stirring, use: first, the strong mechanical stirring produced by ultrasonic cavitation accelerates the removal of the collector from the gangue surface, and increases the water glass by cleaning the mineral surface. The effective area of interaction with gangue minerals; the cavitation of two ultrasonic waves will generate local high temperature and high pressure in the reaction micro-zone on the mineral surface, which can increase the reaction rate between the mineral surface and the agent, and help the collector to detach from the gangue mineral surface. In addition to the adsorption of inhibitors, the bulk temperature required for the reaction can be reduced.
本发明的有益效果是：The beneficial effects of the present invention are:
（1）本发明针对白钨矿精选前高温搅拌脱药的加温时间长、能耗高的特点，选用超声波作用于脱药过程中，超声波的空化作用可以强烈的搅拌矿浆和清洗矿物表面加速捕收剂的脱除速率，缩短加温脱药所需时间，可以减少处理单位矿量所需的燃料消耗和提高生产效率，显著降低了加温脱药过程的成本。(1) In view of the characteristics of long heating time and high energy consumption of high-temperature stirring and drug removal before scheelite selection, the present invention uses ultrasonic waves to act on the drug removal process, and the cavitation effect of ultrasonic waves can strongly stir the pulp and clean minerals The surface accelerates the removal rate of collectors and shortens the time required for heating and drug removal, which can reduce the fuel consumption required to process a unit of ore and improve production efficiency, significantly reducing the cost of the heating and drug removal process.
（2）在加温搅拌过程中使用超声波，超声波的空化作用会在矿物表面的反应微区产生局部高温高压，可以降低反应所需的体相温度同时提高矿物表面与药剂的反应速率，，有助于捕收剂从脉石矿物表面脱除和抑制剂的吸附，在更低的体相温度条件下完成脱药过程，减少燃料的消耗，降低生产成本。(2) Ultrasonic waves are used in the heating and stirring process. The cavitation of ultrasonic waves will generate local high temperature and high pressure in the reaction micro-area on the mineral surface, which can reduce the bulk phase temperature required for the reaction and increase the reaction rate between the mineral surface and the agent. It is helpful for the removal of collectors from the surface of gangue minerals and the adsorption of inhibitors, completes the drug removal process at a lower bulk temperature, reduces fuel consumption, and reduces production costs.
具体实施方式detailed description
下面结合具体实施方式，对本发明作进一步说明。The present invention will be further described below in combination with specific embodiments.
实施例1Example 1
该超声波在白钨矿加温搅拌脱药过程中的应用，将白钨矿（其中WO3的含量为6.97wt%，萤石含量为25.65wt %、方解石含量为18.32wt %，）浓缩至浓度为60wt.%，在白钨矿加温搅拌脱药过程中超声波覆盖搅拌槽体积的2/3以上，超声波的强度为0.3W/cm2，同时加入GYR用量为2.5Kg/t白钨矿，NaOH固体用量为800g/t白钨矿，水玻璃用量为75Kg/t白钨矿，升温至85℃加热25min进行加温搅拌脱药。The ultrasonic wave is used in the process of heating and stirring the scheelite to remove the drug, and the scheelite (the content of WO 3 is 6.97wt%, the content of fluorite is 25.65wt%, and the content of calcite is 18.32wt%) is concentrated to a concentration of 60wt.%, during the process of heating and stirring the scheelite, the ultrasonic wave covers more than 2/3 of the volume of the stirring tank, the intensity of the ultrasonic wave is 0.3W/cm 2 , and the amount of GYR added at the same time is 2.5Kg/t scheelite, The dosage of NaOH solid is 800g/t scheelite, the dosage of water glass is 75Kg/t scheelite, and the temperature is raised to 85°C for 25min to remove the drug by heating and stirring.
经加温搅拌脱药后加入稀释水将矿浆稀释至矿浆浓度为20wt.%冷却至室温后进行常温浮选，浮选流程为一粗一扫三精。粗选矿浆浓度为20wt.%且不再加入药剂，扫选矿浆浓度为20wt.%且添加药剂GYR用量为0.6Kg/t白钨矿，三次精选中添加冲洗水使矿浆浓度保持为15wt.%且不再加入药剂。最终获得白钨矿精矿产率为9.49%、品位为65.75%、回收率为89.54%的优良效果。After heating and stirring to remove the drug, add dilution water to dilute the pulp to a pulp concentration of 20wt.%. After cooling to room temperature, normal temperature flotation is carried out. The flotation process is one rough, one sweep and three fine. The roughing pulp concentration is 20wt.% and no chemicals are added. The sweeping pulp concentration is 20wt.% and the dosage of GYR is 0.6Kg/t scheelite. In the three times of beneficiation, washing water is added to keep the pulp concentration at 15wt. % and no longer add medicine. In the end, the scheelite concentrate yield was 9.49%, the grade was 65.75%, and the recovery rate was 89.54%.
对比实施例1Comparative Example 1
上述白钨矿加温搅拌脱药过程中不加入超声波，升温至90℃加热45min进行加温搅拌脱药，其他参数条件不变，经加温搅拌脱药后加入稀释水将矿浆稀释至矿浆浓度为20wt.%冷却至室温后进行常温浮选，浮选流程为一粗一扫三精。粗选矿浆浓度为20wt.%且不再加入药剂，扫选矿浆浓度为20wt.%且添加药剂GYR用量为0.6Kg/t白钨矿，三次精选中通过增减冲洗水使矿浆浓度保持为15wt.%且不再加入药剂。最终获得白钨矿精矿产率为9.69%、品位为60.11%、回收率为83.56%的效果。The above-mentioned scheelite does not add ultrasonic waves in the process of heating and stirring to remove the drug, and heats up to 90°C for 45 minutes to heat and stir to remove the drug. Other parameters and conditions remain unchanged. After heating and stirring to remove the drug, add dilution water to dilute the pulp to the pulp concentration. After cooling to room temperature for 20wt.%, normal temperature flotation is carried out. The flotation process is one rough, one sweep and three fine. The concentration of roughing pulp is 20wt.% and no chemicals are added, the concentration of sweeping pulp is 20wt.% and the dosage of GYR is 0.6Kg/t scheelite, and the concentration of pulp is maintained at 15wt.% and no longer add medicine. Finally, the yield of scheelite concentrate was 9.69%, the grade was 60.11%, and the recovery rate was 83.56%.
实施例2Example 2
该超声波在白钨矿加温搅拌脱药过程中的应用，将白钨矿（WO3的含量为5.76wt%，萤石含量为为20.65wt%，方解石含量为13.32wt%）浓缩至浓度为60wt.%，在白钨矿加温搅拌脱药过程中超声波覆盖搅拌槽体积的2/3以上，超声波的强度为1.5W/cm2，同时加入GYR用量为1.5Kg/t白钨矿，NaOH固体用量为1000g/t白钨矿，水玻璃用量为60Kg/t白钨矿，升温至70℃加热50min进行加温搅拌脱药。The ultrasonic wave is used in the process of heating and stirring the scheelite to remove the drug. The scheelite (the content of WO 3 is 5.76wt%, the content of fluorite is 20.65wt%, and the content of calcite is 13.32wt%) is concentrated to a concentration of 60wt.%, during the process of heating and stirring the scheelite, the ultrasonic wave covers more than 2/3 of the volume of the stirring tank, the intensity of the ultrasonic wave is 1.5W/cm 2 , and the amount of GYR added is 1.5Kg/t scheelite, NaOH The dosage of solid is 1000g/t scheelite, the dosage of water glass is 60Kg/t scheelite, the temperature is raised to 70°C and heated for 50min to remove the drug by heating and stirring.
经加温搅拌脱药后加入稀释水将矿浆稀释至矿浆浓度为20wt.%冷却至室温后进行常温浮选，浮选流程为一粗一扫三精。粗选矿浆浓度为20wt.%且不再加入药剂，扫选矿浆浓度为20wt.%且添加药剂GYR用量为0.3Kg/t白钨矿，三次精选中添加冲洗水使矿浆浓度保持为15wt.%且不再加入药剂。最终获得白钨矿精矿产率为7.13 %、品位为68.51 %、回收率为84.8 %的优良效果。After heating and stirring to remove the drug, add dilution water to dilute the pulp to a pulp concentration of 20wt.%. After cooling to room temperature, normal temperature flotation is carried out. The flotation process is one rough, one sweep and three fine. The roughing pulp concentration is 20wt.% and no chemicals are added. The sweeping pulp concentration is 20wt.% and the dosage of GYR is 0.3Kg/t scheelite. In the third beneficiation, rinse water is added to keep the pulp concentration at 15wt. % and no longer add medicine. In the end, the yield of scheelite concentrate was 7.13%, the grade was 68.51%, and the recovery rate was 84.8%.
对比实施例2Comparative Example 2
上述白钨矿加温搅拌脱药过程中不加入超声波，升温至90℃加热45min进行加温搅拌脱药，其他参数条件不变，经加温搅拌脱药后加入稀释水将矿浆稀释至矿浆浓度为20wt.%冷却至室温后进行常温浮选，浮选流程为一粗一扫三精。粗选矿浆浓度为20wt.%且不再加入药剂，扫选矿浆浓度为20wt.%且添加药剂GYR用量为0.3Kg/t白钨矿，三次精选中通过增减冲洗水使矿浆浓度保持为15wt.%且不再加入药剂。最终获得白钨矿精矿产率为7.29%、品位为60.31%、回收率为76.73%的效果。The above-mentioned scheelite does not add ultrasonic waves in the process of heating and stirring to remove the drug, and heats up to 90°C for 45 minutes to heat and stir to remove the drug. Other parameters and conditions remain unchanged. After heating and stirring to remove the drug, add dilution water to dilute the pulp to the pulp concentration. After cooling to room temperature for 20wt.%, normal temperature flotation is carried out. The flotation process is one rough, one sweep and three fine. The concentration of roughing pulp is 20wt.% and no chemicals are added, the concentration of sweeping pulp is 20wt.%, and the dosage of GYR is 0.3Kg/t scheelite, and the concentration of pulp is maintained at 15wt.% and no longer add medicine. Finally, the yield of scheelite concentrate was 7.29%, the grade was 60.31%, and the recovery rate was 76.73%.
实施例3Example 3
该超声波在白钨矿加温搅拌脱药过程中的应用，将白钨矿（其中WO3的含量为6.43wt%，萤石含量为22.95 wt%、方解石含量为16.10 wt%，）浓缩至浓度为60wt.%，在白钨矿加温搅拌脱药过程中超声波覆盖搅拌槽体积的2/3以上，超声波的强度为1.0W/cm2，同时加入GYR用量为1.8Kg/t白钨矿，NaOH固体用量为400g/t白钨矿，水玻璃用量为35Kg/t白钨矿，升温至78℃加热35min进行加温搅拌脱药。The ultrasonic wave is used in the process of heating and stirring the scheelite to remove the drug, and the scheelite (the content of WO 3 is 6.43wt%, the content of fluorite is 22.95wt%, and the content of calcite is 16.10wt%) is concentrated to a concentration of 60wt.%, during the process of heating and stirring the scheelite, the ultrasonic wave covers more than 2/3 of the volume of the stirring tank, the intensity of the ultrasonic wave is 1.0W/cm 2 , and the amount of GYR added at the same time is 1.8Kg/t scheelite, The dosage of NaOH solid is 400g/t scheelite, the dosage of water glass is 35Kg/t scheelite, and the temperature is raised to 78°C for 35min to remove the drug by heating and stirring.
经加温搅拌脱药后加入稀释水将矿浆稀释至矿浆浓度为20wt.%冷却至室温后进行常温浮选，浮选流程为一粗一扫三精。粗选矿浆浓度为20wt.%且不再加入药剂，扫选矿浆浓度为20wt.%且添加药剂GYR用量为0.5Kg/t白钨矿，三次精选中添加冲洗水使矿浆浓度保持为15wt.%且不再加入药剂。最终获得白钨矿精矿产率为8.53%、品位为65.35%、回收率为86.69%的优良效果。After heating and stirring to remove the drug, add dilution water to dilute the pulp to a pulp concentration of 20wt.%. After cooling to room temperature, normal temperature flotation is carried out. The flotation process is one rough, one sweep and three fine. The concentration of roughing pulp is 20wt.% and no chemicals are added, the concentration of sweeping pulp is 20wt.% and the dosage of GYR is 0.5Kg/t scheelite, and washing water is added in the three times of beneficiation to keep the pulp concentration at 15wt. % and no longer add medicine. In the end, the scheelite concentrate yield was 8.53%, the grade was 65.35%, and the recovery rate was 86.69%.
对比实施例3Comparative Example 3
上述白钨矿加温搅拌脱药过程中不加入超声波，升温至90℃加热45min进行加温搅拌脱药，其他参数条件不变，经加温搅拌脱药后加入稀释水将矿浆稀释至矿浆浓度为20wt.%冷却至室温后进行常温浮选，浮选流程为一粗一扫三精。粗选矿浆浓度为20wt.%且不再加入药剂，扫选矿浆浓度为20wt.%且添加药剂GYR用量为0.3Kg/t白钨矿，三次精选中通过增减冲洗水使矿浆浓度保持为15wt.%且不再加入药剂。最终获得白钨矿精矿产率为8.56%、品位为61.35%、回收率为81.67%的效果。The above-mentioned scheelite does not add ultrasonic waves in the process of heating and stirring to remove the drug, and heats up to 90°C for 45 minutes to heat and stir to remove the drug. Other parameters and conditions remain unchanged. After heating and stirring to remove the drug, add dilution water to dilute the pulp to the pulp concentration. After cooling to room temperature for 20wt.%, normal temperature flotation is carried out. The flotation process is one rough, one sweep and three fine. The concentration of roughing pulp is 20wt.% and no chemicals are added, the concentration of sweeping pulp is 20wt.%, and the dosage of GYR is 0.3Kg/t scheelite, and the concentration of pulp is maintained at 15wt.% and no longer add medicine. Finally, the yield of scheelite concentrate is 8.56%, the grade is 61.35%, and the recovery rate is 81.67%.
以上对本发明的具体实施方式作了详细说明，但是本发明并不限于上述实施方式，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。The specific embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art .
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