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A method for recovering tungsten-tin metal from apt waste

A technology of tungsten tin and waste materials, which is applied in the field of recovery and utilization of tungsten secondary resources, can solve the problems of unrealized recycling, poor acid and alkali solubility, serious equipment corrosion, etc., and achieve easy control of process conditions, low production cost, and environmental friendliness Effect

Inactive Publication Date: 2011-12-21
DAYU DONGHONG TIN PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the field of secondary resource recovery of tungsten is mainly concentrated on tungsten-containing alloy waste and tungsten-containing waste catalyst. Because APT waste contains a large amount of sediment, its solubility in acid and alkali is poor.
The use of chemical recycling method for recycling will cause serious environmental pollution, serious equipment corrosion and high cost
Therefore, although there are many researches on the recycling of APT waste, most of them are still in the laboratory research stage, and industrial recycling has not been realized.

Method used

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  • A method for recovering tungsten-tin metal from apt waste
  • A method for recovering tungsten-tin metal from apt waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , the present embodiment production method is as follows:

[0029] (1) APT waste is ground into 80 orders with a ball mill;

[0030] (2) Classify the ground material in (1) with a circular roller sieve, and return the material with a size of more than 80 to the ball mill for grinding, and the material with a size of less than 80 will enter the next process;

[0031] (3) Add 1000 grams of ore samples from (2) into the feeding trough evenly within 30 minutes, select the working parameters of the shaking table, adjust the flushing water and the inclination of the bed surface, so that the material bed surface is fan-shaped distribution, while adjusting the material receiving device to receive each product separately. After the sorting process is over, stop the machine, continue to flush the water, clean the bed surface, and classify the remaining particles on the bed surface into the selected product; select low-grade rough concentrate.

[0032] (4) The low-...

Embodiment 2

[0038] see figure 1 , the present embodiment production method is as follows:

[0039] (1) APT waste is ground into 80 orders with a ball mill;

[0040] (2) Classify the ground material in (1) with a circular roller sieve, and return the material with a size of more than 80 to the ball mill for grinding, and the material with a size of less than 80 will enter the next process;

[0041] (3) Add 1000 grams of ore samples from (2) into the feeding trough evenly within 30 minutes, select the working parameters of the shaking table, adjust the flushing water and the inclination of the bed surface, so that the material bed surface is fan-shaped distribution, while adjusting the material receiving device to receive each product separately. After the sorting process is over, stop the machine, continue to flush the water, clean the bed surface, and classify the remaining particles on the bed surface into the selected product; select low-grade rough concentrate.

[0042] (4) The low-...

Embodiment 3

[0048] see figure 1 , the present embodiment production method is as follows:

[0049] (1) APT waste is ground into 80 orders with a ball mill;

[0050] (2) Classify the ground material in (1) with a circular roller sieve, and return the material with a size of more than 80 to the ball mill for grinding, and the material with a size of less than 80 will enter the next process;

[0051] (3) Then add 1000 grams of ore samples from (2) graded materials evenly into the feeding trough within 30 minutes, and select a shaker

[0052] Working parameters, adjust the flushing water and the inclination of the bed surface, so that the material bed surface is distributed in a fan shape, and at the same time adjust the material receiving device to receive each product separately. After the sorting process is over, stop the machine, continue to flush the water, clean the bed surface, and classify the remaining particles on the bed surface into the selected product; select low-grade rough con...

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Abstract

The invention belongs to the field of recovery and utilization of tungsten secondary resources, and is a method for recovering tungsten and tin metal from APT waste, which is characterized in that the process includes: APT waste is pre-enriched by a shaking table, and a large amount of mud and sand is discarded; The magnetic separator separates a large amount of magnetic substances, and after the sulfide ore is preferentially flotation, it is further refined by a groove shaker, and finally the tungsten and tin metals are separated by flotation, and the tungsten concentrate and tin concentrate are selected. The invention has the advantages of easy control of process conditions, strong operability, simple process, low production cost, waste water can be recycled, zero discharge of waste water is realized, and environmental pollution is avoided. It is easy to realize industrial scale production, and it is a technology for reducing, harmless and recycling APT waste; it has significant economic, social and ecological benefits.

Description

technical field [0001] The invention relates to the technical field of recovery and utilization of tungsten secondary resources, and relates to a method for recovering tungsten-tin metal from APT waste. technical background [0002] As we all know, in the process of producing APT, no matter what kind of tungsten concentrate decomposition process is adopted, some tungsten smelting leaching slag, that is, APT waste, will be produced. In addition to tungsten, these APT wastes also contain many other valuable metal elements, and their content is often 1 to 2 orders of magnitude higher than that of the corresponding elements in the ore. For example, the lowest industrial grade of primary tungsten ore (WO 3 )% is 0.12~0.2, but the tungsten content in APT scrap is as high as 2.04% (WO 3 ); the lowest industrial grade of primary tin ore is 0.2-0.4%, but the content of tin in APT waste is as high as 1.15%. Therefore, APT waste as a secondary resource of tungsten has high recycling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03D1/00B03B5/02B03C1/02
Inventor 饶日荣陈金清朱小红陈星斌周毅姚文俐刘平
Owner DAYU DONGHONG TIN PROD CO LTD
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