Method free from pickling dephosphorization for wolframine wet concentrate
A technology of tungsten concentrate and concentrate, which is applied in the field of scheelite wet concentrate without pickling and dephosphorization, can solve the problems of difficult management and high risk, and achieve the effects of improving the working environment, prolonging the service life and saving costs
Inactive Publication Date: 2012-08-15
CHINA MOLYBDENUM
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Problems solved by technology
The amount of hydrochloric acid used in this process is about 1930.5 tons per year, and its value is about 965,300 yuan; the cost of corresponding equipment and facilities (hydrochloric acid storage tank, hydrochloric acid delivery pump, pit accident pump, hydrochloric acid metering tank, hydrochloric acid delivery pipeline and fittings) is about 8 The annual minimum cost of the pickling process is 1.0453 million yuan, and acid is more dangerous and difficult to manage
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[0010] Such as figure 2 As shown, a method for eliminating acid washing and dephosphorization of scheelite wet concentrate adopts tungsten wet concentrate→dehydration→drying process, and eliminates the acid leaching of the concentrated pulp through a φ2 m×2 m mixing tank and the use of φ2 m The rinsing process of the m×2 m mixing tank is changed from the original design process of tungsten wet concentrate→acid leaching→rinsing→dehydration→drying to the current process of tungsten wet concentrate→dehydration→drying. It has been proved by production practice that This innovation has achieved huge economic and environmental benefits, and the tungsten concentrate index has reached or even exceeded the design requirements.
[0011] The specific implementation process is as follows: the selected tungsten concentrate is concentrated by a φ9m thickener, and the concentrated pulp is directly pumped into a program-controlled diaphragm filter press for dehydration, and then dried by a s...
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The invention belongs to the technical field of the mineral separation technology, which mainly relates to a method free from pickling dephosphorization for wolframine wet concentrate. The method comprises the technologies of wolframine wet concentrate, dewatering and drying, namely concentrated tungsten concentrate is condensed by a phi 9m thickener, the condensed ore pulp is directly pumped into a program control membrane filter press for filter press and dewatering, then, the condensed ore pulp is dried by a screw dryer, and finally, a dry concentrate which conforms to the selling standard is produced. The moisture is controlled to be within 4%, and the concentrate grade is controlled to about 25%. The production experience proves that the innovation obtains great economic benefit and environment-friendly benefit, and the tungsten concentrate index reaches even exceeds the design requirement. The product cost can be greatly saved each year, and the workshop management tends to be simplified. Meanwhile, the service life of the vacuum paddles of the dryer is prolonged. Equipment, facility and environment pollution by hydrochloric acid can be avoided, the working environment of workers is greatly improved, and the enterprise purpose of people orientation can be truly realized.
Description
technical field [0001] The invention belongs to the technical field of beneficiation technology, and mainly relates to a method for removing phosphorus from scheelite wet concentrate without acid washing. Background technique [0002] The original design process of the pickling and drying workshop is as follows: Wet tungsten concentrate→acid leaching→rinsing→dehydration→drying process. The schematic diagram of the original design process is shown in figure 1 , that is: the selected tungsten concentrate is concentrated by a φ9m thickener and flows to a φ2m×2m mixing tank for acid leaching. After acid leaching, it is pumped into another φ2m×2m mixing tank for rinsing , the scheelite wet concentrate after rinsing is dehydrated by a program-controlled diaphragm filter press, and then dried by a screw dryer to obtain the final dry concentrate. The water content is controlled within 4%, and the concentrate grade is about 25%, but The effect of pickling does not improve the qualit...
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IPC IPC(8): B03B7/00
Inventor 高湛伟郑灿辉杨鹤翔赵海彦贾宗植徐文松张子瑞
Owner CHINA MOLYBDENUM