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Method for comprehensively recovering gold and zinc from high leaching residue and recycling wastewater

A wastewater circulation and high leaching slag technology, which is applied in the field of mineral processing, can solve the problems of no reference materials for chemicals and measurement, and achieve the effects of environmental protection and resource utilization.

Inactive Publication Date: 2014-01-22
CHIFENG ZHONGSE ZINC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For flotation of gold from high leaching slag, there are no reference materials for which reagent and metering to use

Method used

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  • Method for comprehensively recovering gold and zinc from high leaching residue and recycling wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: a kind of method that comprehensively reclaims gold and zinc and waste water recycling from high leaching slag, it comprises the steps:

[0034] (a) High leaching slag pretreatment: high leaching slag and water are mixed and stirred at a ratio of slurry concentration of 40% to form a high leaching slag slurry, and lime milk is added to adjust the pH to 4.3; Sodium phosphate, activated carbon, activator Na 2 S, adding 90 grams of sodium hexametaphosphate, 3000 grams of activated carbon, and activator Na 2 S is 1000 grams, after 20 minutes of reaction, the pretreated high leaching slag pulp is obtained;

[0035] (b) Rough separation: Add butylamine black medicine, Z-200 and foaming agent BK-901 to the pretreated high leaching slag pulp, add 700 grams of butylamine black medicine and 100 grams of Z-200 per ton of high leaching slag gram, foaming agent BK-901 is 20 grams; select roughing concentrate and roughing tailings;

[0036] (c) Concentration I: Add b...

Embodiment 2

[0044] Embodiment 2: a kind of method that comprehensively reclaims gold and zinc and waste water recycling from high leaching slag, it comprises the steps:

[0045] (a) High leaching slag pretreatment: high leaching slag and water are mixed and stirred at a ratio of slurry concentration of 45% to form a high leaching slag slurry, and lime milk is added to adjust the pH to 4.4; Sodium phosphate, activated carbon, activator Na 2 S, adding 80 grams of sodium hexametaphosphate, 2800 grams of activated carbon, and activator Na 2 S is 1100 grams, obtains the pretreatment high leaching slag pulp after 18 minutes of reaction;

[0046] (b) Rough separation: Add butylamine black medicine, Z-200 and foaming agent BK-901 to the pretreated high leaching slag pulp, adding 720 grams of butylamine black medicine and 110 grams of Z-200 per ton of high leaching slag gram, foaming agent BK-901 is 22 grams; select roughing concentrate and roughing tailings;

[0047] (c) Concentration I: Add b...

Embodiment 3

[0054] Embodiment 3: a kind of method that comprehensively reclaims gold and zinc and waste water recycling from high leaching slag, it comprises the steps:

[0055] (a) High leaching slag pretreatment: high leaching slag and water are mixed and stirred at a ratio of slurry concentration of 35% to form a high leaching slag slurry, and lime milk is added to adjust the pH to 4.2; Sodium phosphate, activated carbon, activator Na 2 S, adding 100 grams of sodium hexametaphosphate, 3300 grams of activated carbon, and activator Na 2 S is 900 grams, and after 28 minutes of reaction, the pretreated high leaching slag pulp is obtained;

[0056] (b) Rough separation: Add butylamine black medicine, Z-200 and foaming agent BK-901 to the pretreated high leaching slag slurry, add 680 grams of butylamine black medicine and 95 grams of Z-200 per ton of high leaching slag gram, foaming agent BK-901 is 18 grams; select roughing concentrate and roughing tailings;

[0057] (c) Concentration I: ...

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Abstract

The invention discloses a method for comprehensively recovering gold and zinc from high leaching residue and recycling wastewater. The method comprises nine process steps of pre-treating the high leaching residue, carrying out rough concentration once, carrying out fine concentration twice, carrying out scavenging for three times, carrying out middling re-concentration once and preparing basic zinc sulfate. The method is the best process route which is selected aiming at the mineral characteristics of the high leaching residue. The gold recovery rate is increased through carrying out rough concentration once, fine concentration twice, scavenging for three times and middling re-concentration once on pretreated high leaching residue ore slurry, the combined adding point and dosage of medicaments are selected scientifically and reasonably, the acting time of various medicaments is guaranteed, the dosage of the medicaments is reduced, and the recovery rate and grade of gold are further increased. Due to the step of preparing basic zinc sulfate from waste mineral water, zinc sulfate is recovered while mineral separation wastewater is purified, and the wastewater returns to floatation slurry mixing and is recycled; the wastewater can be recycled, so that the environmental protection is facilitated, and the resource utilization rate is increased.

Description

technical field [0001] The invention belongs to the technical field of ore dressing, in particular to a method for comprehensively recovering gold and zinc from high leaching slag and recycling waste water. Background technique [0002] There are three types of leaching operations for zinc hydrosmelting: low-temperature conventional leaching, high-temperature high-acid leaching and ultra-high-acid leaching. Among them, the high-temperature and high-acid leaching process has developed rapidly in China in recent years, and its output has accounted for 30% of the hydro-smelting zinc production. More than %, and showing a rapid development trend, will gradually become the mainstream of zinc smelting process at home and abroad. [0003] The high-temperature and high-acid leaching process mainly includes four process steps: neutral leaching, low-temperature pre-neutralization, high-temperature and high-acid leaching, and low-pollution sinking alum to remove iron. The temperature ...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00C22B7/04C22B11/00C22B19/30
CPCY02P10/20
Inventor 王风朝马永涛葛英勇李龙张春明刘玉琴李连中朱建伟
Owner CHIFENG ZHONGSE ZINC IND CO LTD
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