CN102618730A - Process for separating materials containing indium, lead, silver, copper and bismuth - Google Patents

Abstract

The invention discloses a process for separating materials containing indium, lead, silver, copper and bismuth. The process includes adding vulcanizer with the weight equal to copper content, from 1 to 10% of adhesive and from 5 to 10% of lime into the processed materials and mixing the vulcanizer, the adhesive and the lime with the processed materials to obtain mixed materials; realizing briquetting forming of the mixed materials under the pressure ranging from 5000KN to 8000KN, placing the mixed materials at the normal temperature for 5 to 10 days after briquetting and forming, and leading block masses to be cured after oxidation reaction of the materials under the high pressure; and feeding the block masses and coke into a shaft furnace to smelt the block masses and the coke at the temperature ranging from 1250 DEG C to 1350 DEG C, and realizing lead, bismuth and silver smelting for produced slag including from 20 to 30% of FeO, from 25 to 35% of SiO2 and from 15 to 25% of CaO to obtain alloy. In the process, the copper is separated and enriched due to the fact that the copper and the iron sulfide are reacted to generate sulfur, and the indium is volatilized and enriched into smoke. The process is simple, and is fine in enrichment effect and high in recycling rate of various metals.

Description

The separating technology that contains the plumbous silver-bearing copper bismuth of indium material

Technical field

The invention belongs to the separation and the beneficiation technologies field of the multiple valuable metal of non-ferrous metal, relate to a kind of employing and make the separating technology that contains the plumbous silver-bearing copper bismuth of indium material that sulfonium divides the plumbous bismuth silver alloy of copper volatilizing and enriching indium melting simultaneously.

Background technology

Have when producing to plant and contain the plumbous silver-colored bismuth copper intermediate material of indium, value height, composition complicacy in the copper-lead smeltery; To its comprehensive recovery is a very complicated technological problems, and tradition is to leach with concentrated hydrochloric acid to reclaim indium copper, replaces copper then and carries extraction recovery indium; But because elements such as containing metal attitude lead bronze bismuths, the leaching yield of indium is low, and the spent acid water yield is also big simultaneously; Environmental protection is had very big pressure, and plumbous and silver remains a kind of intermediate material, does not well reclaim.

Summary of the invention

The object of the present invention is to provide a kind of technology simple, concentration effect is good, the separating technology that contains the plumbous silver-bearing copper bismuth of indium material that various metal recovery rates are high.

Present method comprises the steps:

1, mixing of materials: material adds the vulcanizing agent that copper content is equal to, the 1-10% sticker, and 5-10% lime mixes;

2, normal temperature is pressed group: at normal temperatures; Press down a moulding with fully automatic hydroform machine said mixture material at pressure 5000-8000KN, placed at normal temperatures 5-10 days, wait material under high pressure to carry out oxidizing reaction; Make the agglomerate slaking, intensity does not get final product not pulverize at 1 meter eminence freely falling body;

3, matte stove melting: agglomerate and coke are dropped in the shaft furnace in 1250-1350 ℃ of following melting, and the output slag type is: FeO20-30%, SiO ₂25-35%, CaO 15-25%.Plumbous bismuth silver melting obtains alloy, and the sulphur in copper and the iron sulphide generates sulfonium makes copper obtain separation and concentration, and the indium volatilizing and enriching is in flue dust.

Wherein: vulcanizing agent is an iron sulphide, the metallic sulfide of lead sulfide;

Material is the lead bullion scum silica frost, the mixture of blister copper blowing slag;

Sticker is a lime, cement, clay, the mixture of iron powder.

The invention has the beneficial effects as follows:

1, multiple one step of valuable metal separation and concentration.Dividing copper to refine plumbous enrichment indium can accomplish in a step, and all metals have all obtained effective recovery.

2, indium enrichment 5-10 times, copper enrichment 2-4 times, plumbous silver-colored bismuth directly obtains alloy, the process energy-conserving and environment-protective.

3, whole process valuable metal direct yield is high, the recovery 90-98% of silver, and plumbous recovery 90-98%, the recovery of copper reaches 95-98%, and the recovery of bismuth reaches 95-98%, indium 85-95%.

Description of drawings:

Fig. 1 is a concrete process flow sheet of the present invention.

Specific embodiment according to technical process shown in the drawings;

1, mixing of materials: material adds the vulcanizing agent that copper content is equal to, the 1-10% sticker, and 5-10% lime mixes;

2, normal temperature is pressed group: at normal temperatures; Press down a moulding with fully automatic hydroform machine said mixture material at pressure 5000-8000KN, placed at normal temperatures 5-10 days, wait material under high pressure to carry out oxidizing reaction; Make the agglomerate slaking, intensity does not get final product not pulverize at 1 meter eminence freely falling body;

3, matte stove melting: agglomerate and coke are dropped in the shaft furnace in 1250-1350 ℃ of following melting, and the output slag type is: FeO 20-30%, SiO ₂25-35%, CaO 15-25%, plumbous bismuth silver melting obtains alloy, and the sulphur in copper and the iron sulphide generates sulfonium makes copper obtain separation and concentration, and the indium volatilizing and enriching is in flue dust.

Wherein: vulcanizing agent is an iron sulphide, the metallic sulfide of lead sulfide;

Material is the lead bullion scum silica frost, the mixture of blister copper blowing slag;

Sticker is a lime, cement, clay, the mixture of iron powder.

The main chemical reactions formula is:

Me ⁿ⁺+O ₂→MeO

Me represents Fe, Cu, Pb, Bi etc., and wherein n has different variations according to the valency difference.

The melting of matte stove is under 1250-1350 ℃, in weak oxide atmosphere, and iron and the slag making of calcium silicon; Plumbous bismuth silver then is reduced into metal and becomes to merge gold altogether and emit from the bottom, and then reaction obtains cupric sulfide to copper with iron sulphide, on alloy; Form sulfonium, indium then gets into flue dust as suboxide.

The main chemical reactions formula is:

C+O→CO2

C+O→CO

CO+O2→CO2

Me ⁿ⁺+CO→CO2+Me

Cu2O+FeS→CuS+Fe?O

Wherein m, n have different variations according to the valency difference.

This operation is the direct melting of plumbous bismuth silver an alloy then, and electrolysis gets final product the anode sludge of separation of lead and rich bismuth silver, and copper then generates sulfide and send copper metallurgy as the copper raw materials for metallurgy separately; Indium then is enriched in the flue dust with the form of oxide compound, when reclaiming indium, can leach at the low sulfuric acid of acidity; Not only acid consumption is little; The leaching yield of indium is also high, and wastewater flow rate is 1/5th of a traditional process, extracts indium slag afterwards and returns the group's of pressure recovery lead etc.

Obtaining product has: plumbous silver-colored bismuth alloy contains, sulfonium, flue dust, slag, and its composition sees the following form.

The Chemical Composition of various materials (%)

Visible by last table: after the present invention's processing, contain the material one step initial gross separation enrichment of the plumbous silver-bearing copper bismuth of indium, plumbous silver-colored bismuth obtains alloy simultaneously; So that subsequent handling reclaims, 5 times of indium enrichments simultaneously, the wastewater flow rate that reclaims indium also reduces 5 times; Reach the purpose of energy-conserving and environment-protective, good economic environmental benefit is arranged.

Fume amount is the 10-20% of add-on in the production.Know that by table 1 indium enrichment 5-10 times, copper enrichment 2-4 times, plumbous silver-colored bismuth directly obtains alloy, the process energy-conserving and environment-protective.Whole process valuable metal direct yield is high, the recovery to 95% of silver, and the plumbous recovery to 90%, the recovery of copper reaches 98%, and the recovery of bismuth reaches 98%, and indium reaches 88%.

Claims (1)

1. separating technology that contains the plumbous silver-bearing copper bismuth of indium material is characterized in that may further comprise the steps:

1), mixing of materials: material adds the vulcanizing agent that copper content is equal to, 1-10% sticker, the mixing of 5-10% lime;

2), normal temperature is pressed group: at normal temperatures; Press down a moulding with fully automatic hydroform machine said mixture material at pressure 5000-8000KN, placed at normal temperatures 5-10 days, wait material under high pressure to carry out oxidizing reaction; Make the agglomerate slaking, intensity does not get final product not pulverize at 1 meter eminence freely falling body;

3), matte stove melting: agglomerate and coke are dropped in the shaft furnace in 1250-1350 ℃ of following melting, and the output slag type is: FeO 20-30%, SiO ₂25-35%, CaO 15-25%.Plumbous bismuth silver melting obtains alloy, and the sulphur in copper and the iron sulphide generates sulfonium makes copper obtain separation and concentration, and the indium volatilizing and enriching is in flue dust.

Wherein: vulcanizing agent is an iron sulphide, the metallic sulfide of lead sulfide;

Material is the lead bullion scum silica frost, the mixture of blister copper blowing slag;

Sticker is a lime, cement, clay, the mixture of iron powder.

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