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Comprehensive recovery method of smoke with high arsenic and antimony oxide contents

A technology of high arsenic and antimony oxygen fume and recovery method is applied in the field of comprehensive recovery and utilization of metallurgical waste residue, which can solve the problems of complex process, difficult separation, low separation efficiency, etc. control effect

Active Publication Date: 2014-04-30
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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  • Comprehensive recovery method of smoke with high arsenic and antimony oxide contents
  • Comprehensive recovery method of smoke with high arsenic and antimony oxide contents
  • Comprehensive recovery method of smoke with high arsenic and antimony oxide contents

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0027] (1) 100g of high arsenic antimony oxide dust (including Sb 35.04%, As 26.71%) and 34.3 g of sodium nitrate (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 metaantimonate and sodium arsenate) are mixed uniformly, and then put into the calciner to raise the temperature of 400 to 500 ℃ 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 70~75℃ hot water and leaching for 120 minutes, and then filter to obtain the sodium metaantimonate filter cake and sodium arsenate solution; drying the sodium metaantimonate filter cake and concentrated sodium arsenate solution , Respectively ge...

Embodiment 2

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

[0032] (1) 200g of high arsenic antimony oxide dust (including Sb74.89%, As5.78%), 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 (It is 1.5 times of the theoretical value of sodium metaantimonate and sodium arsenate) after mixing uniformly, put it into the calciner, heat up 500~550℃ 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 80~90℃ hot water and leaching for 100 minutes, then filter to obtain the sodium metaantimonate filter cake and sodium arsenate solution; dry the sodium metaantimonate filter cake and the concentrated sodium arsenate solution, respectively Obtained 229.1 g of sodium metaan...

Embodiment 3

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

[0037] (1) 246g of high arsenic antimony oxide dust (including Sb15.06%, As30.56%), 93.5g of sodium nitrate (1.3 times the theoretical value of antimony and arsenic reaction in high arsenic antimony oxide dust), 156.3g of sodium carbonate (To generate 1.6 times the theoretical value of sodium metaantimonate and sodium arsenate) After mixing uniformly, put it in the calcination furnace and heat up 600~680℃ for calcination; after calcination for 60 minutes, cool down 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 90-100℃ hot water to leaching for 60 minutes, then filter to obtain sodium metaantimonate filter cake and sodium arsenate solution; dry the sodium metaantimonate filter cake and concentrated sodium arsenate solution , Respectively get 63.1g of sodi...

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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 slag, in particular to a comprehensive recovery method of high arsenic, antimony, oxygen smoke and dust. Background technique [0002] Arsenic and its oxides are very volatile, and the chemical properties of arsenic are very close to those of antimony. Associated with antimony ore, arsenic oxide is generated in the antimony smelting process of volatilization roasting or volatilization smelting and enters into antimony oxide together with antimony oxide. Generally, the method for removing arsenic from antimony and oxygen with low arsenic content is to obtain refined antimony by removing impurity through alkaline refining after reduction smelting. This alkaline refining removes arsenic, and the alkali consumption is relatively high. If the antimony oxygen containing 3% arsenic is removed to 0.8%, the alkali consumption is 4.5-5kg / kgAs. Then the ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/02C22B30/04C22B30/02
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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