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A kind of comprehensive recovery method of high arsenic antimony oxide dust

A high-arsenic, antimony-oxygen fume and recovery method technology, which is applied in the direction of metal recovery and recycling technology, can solve the problems of complex process, difficult separation, and low separation efficiency, and achieve low oxidant and alkali consumption, low energy consumption, and process Exhaust gas controllable effect

Active Publication Date: 2015-09-02
锡矿山闪星锑业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can better deal with high arsenic dust or materials, but this method has the disadvantages of complex process, difficulty of complete separation and low separation efficiency when recovering other valuable metals

Method used

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  • A kind of comprehensive recovery method of high arsenic antimony oxide dust
  • A kind of comprehensive recovery method of high arsenic antimony oxide dust
  • A kind of comprehensive recovery method of high arsenic antimony oxide dust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The comprehensive recovery method of high arsenic, antimony and oxygen dust in this embodiment comprises the following steps:

[0027] (1) Mix 100g of high-arsenic antimony oxide dust (including Sb35.04%, As26.71%) with sodium nitrate 34.3g (1.0 times the theoretical value of antimony and arsenic reaction in high-arsenic antimony oxide dust), sodium hydroxide 51.6 g (1.4 times the theoretical value of sodium antimonate and sodium arsenate) mixed evenly, put into a calciner and heat up at 400-500°C for calcination; after calcination for 30 minutes, cool to obtain 141.3g of calcined material (of which Sb24. 67%, As18.56%, Sb 3+ 0.005%, As 3+ 0.008%).

[0028] (2) Add the calcined material to 280mL of hot water at 70-75°C for 120 minutes, then filter to obtain sodium antimonate filter cake and sodium arsenate solution; dry the sodium antimonate filter cake and concentrated sodium arsenate solution , 59.5g of sodium antimonate (including 57.26% of Sb and 0.32% of As) and...

Embodiment 2

[0031] The comprehensive recovery method of high arsenic, antimony and oxygen dust in this embodiment comprises the following steps:

[0032] (1) Combine 200g of high-arsenic antimony oxide dust (including Sb74.89%, As5.78%) with 75.6g of sodium nitrate (1.1 times the theoretical value of antimony and arsenic reaction in high-arsenic antimony oxide dust), 44.1g of sodium carbonate (1.5 times the theoretical value to generate sodium antimonate and sodium arsenate) After mixing evenly, put it into a calciner, heat up to 500-550°C for calcination; after calcination for 45 minutes, cool to obtain 281.3g of calcined material (of which Sb52. 89%, As4.05%, Sb3+0.004%, As3+0.006%).

[0033] (2) Add the calcined material to 850mL of hot water at 80-90°C for 100 minutes, and then filter to obtain sodium antimonate filter cake and sodium arsenate solution; dry the sodium antimonate filter cake and concentrated sodium arsenate solution, respectively 229.1 g of sodium antimonate (includin...

Embodiment 3

[0036] The comprehensive recovery method of high arsenic, antimony and oxygen dust in this embodiment comprises the following steps:

[0037](1) Combine 246g of high-arsenic antimony oxide dust (including Sb15.06%, As30.56%) with 93.5g of sodium nitrate (1.3 times the theoretical value of antimony and arsenic reaction in high-arsenic antimony oxide dust), and 156.3g of sodium carbonate (1.6 times the theoretical value of sodium antimonate and sodium arsenate to produce sodium antimonate and sodium arsenate) After mixing evenly, put it into a calciner and heat up to 600-680°C for calcination; after calcination for 60 minutes, cool to obtain 371.9g of calcined material (of which Sb9.89 %, As19.89%, Sb 3+ 0.005%, As 3+ 0.006%).

[0038] (2) Add the calcined material to 1500mL of hot water at 90-100°C for 60 minutes, then filter to obtain sodium antimonate filter cake and sodium arsenate solution; dry the sodium antimonate filter cake and concentrated sodium arsenate solution 6...

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Abstract

A comprehensive recovery method of smoke with high arsenic and antimony oxide contents comprises the following steps of: (1) roasting: after uniformly mixing the smoke with the high arsenic and antimony oxide contents, sodium nitrate and alkali, putting in a furnace for roasting at 400-680 DEG C, cooling after roasting to obtain a roasting material, (2) leaching: adding the roasting material into hot water for leaching, filtering to obtain a sodium antimonate filter cake and a sodium arsenate solution, and (3) drying: drying the sodium antimonate filter cake and the concentrated sodium arsenate solution to obtain a sodium antimonate product and a sodium arsenate product. The method integrates the advantages of a fire method and a wet method, and thoroughly separates antimony and arsenic from the smoke with the high arsenic and antimony oxide contents; an antimony content in sodium antimonate is 56-62%; an arsenic content in sodium antimonate is less than 0.5%; the arsenic content in sodium arsenate is 17-30%; the antimony content in sodium arsenate is less than 0.5%; the direct yield of the method reaches above 95%; recovery rates of antimony and arsenic are 96-99%; a recovery process is short; very little waste gas is generated and can be absorbed and returned by an alkaline liquor; and the method is short in flow and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of comprehensive recovery and utilization of metallurgical waste residues, in particular to a comprehensive recovery method for high-arsenic, antimony-oxygen smoke and dust. Background technique [0002] Arsenic and its oxides are extremely volatile, and these chemical properties of arsenic are very close to antimony. The arsenic associated in antimony ore generates arsenic oxide and enters antimony oxide together with antimony oxide during the fire antimony smelting process of volatilization roasting or volatilization smelting. Generally, the method of removing arsenic from antimony oxygen with low arsenic content is to remove impurities through reduction smelting and alkaline refining, and remove the arsenic in it to obtain refined antimony. This kind of alkaline refining removes arsenic, and the alkali consumption is high. For example, if the antimony oxygen containing arsenic is 3% to remove arsenic to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/02C22B30/04C22B30/02
CPCY02W30/54
Inventor 刘鹊鸣单桃云廖光荣邓卫华戴永俊
Owner 锡矿山闪星锑业有限责任公司
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