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Horizontal type pressure leaching kettle and zinc sulfide concentrate leaching method using same

A technology for zinc sulfide concentrate and pressure leaching, applied in the field of metallurgy, can solve problems to be improved, etc., and achieve the effects of improving leaching efficiency and reducing production costs

Active Publication Date: 2011-08-31
云南永昌铅锌股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical scheme involved in this patent disclosure still needs to be improved

Method used

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  • Horizontal type pressure leaching kettle and zinc sulfide concentrate leaching method using same
  • Horizontal type pressure leaching kettle and zinc sulfide concentrate leaching method using same
  • Horizontal type pressure leaching kettle and zinc sulfide concentrate leaching method using same

Examples

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Effect test

example 1

[0051] The raw material is zinc sulfide concentrate from a factory, and its composition (percentage by weight) is: Zn41.2%, Fe15.67%, S28.29%.

[0052]The zinc sulfide concentrate is subjected to sulfuric acid leaching by adopting the steps of the general method, wherein a total of 240 g of the zinc sulfide concentrate is leached with sulfuric acid having a concentration of 1.5 mol / L. The leaching conditions are: temperature 150±5°C, stirring speed 200-250r / min, leaching time about 120min, internal pressure 1.2Mpa, liquid-solid ratio 5:1. The amount of lignin added is 0.2% by weight of the ore amount, the leaching rate of zinc is 98.23%, and the final acid of the leachate is 0.2mol / L; 300 grams of zinc oxide ore and 1.5% zinc by weight are added to the last chamber of the autoclave. Gram basic sodium carbonate, pH of neutralization end point of leachate: 5.4, at the same time, iron in leachate is transferred to slag phase, liquid and solid are separated by pressure filtration,...

example 2

[0054] The raw material is zinc sulfide concentrate from a factory, and its composition (percentage by weight) is: Zn42.5%, Fe9.7%, S27.36%.

[0055] The zinc sulfide concentrate is subjected to sulfuric acid leaching by adopting the steps of the general method, wherein a total of 240 g of the zinc sulfide concentrate is leached with dilute sulfuric acid with a concentration of 1.4 mol / L. The leaching conditions are: temperature 150±5°C, stirring speed about 200-250r / min, leaching time about 120min, pressure inside the kettle 1.2Mpa, liquid-solid ratio 5:1. The addition of lignin is 0.2% by weight of the ore amount, the leaching rate of zinc is 98.23%, and the final acid of the leachate is 0.18mol / L; 310 grams of zinc oxide ore and 1.1 grams of zinc oxide ore and 1.1 grams of zinc are added in the last chamber of the autoclave. Alkali salt, leaching solution neutralization endpoint pH: 5.4, so that the iron in the leaching solution is transferred to the slag phase, and the liq...

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Abstract

The invention discloses a horizontal type pressure leaching kettle comprising a kettle body, a first feed port, oxygen inlets, a second feed port and a discharge port, wherein the kettle body is provided with a first end and a second end, and a leaching space is defined in the kettle body; the first feed port is arranged at the part, adjacent to the first end, of the top of the kettle body; the oxygen inlets are arranged at the bottom and lateral part of the kettle body; the second feed port is arranged at the part, adjacent to the second end, of the top of the kettle body; and the discharge port is arranged at the second end. In addition, the invention further provides a leaching method using the horizontal type pressure leaching kettle. The horizontal type pressure leaching kettle can be used for conducting zinc sulfide concentrate leaching reaction in the pressure kettle, and simultaneously realizing reduction of acid concentration and iron content of the discharged leachate.

Description

technical field [0001] The invention relates to the field of metallurgy. Specifically, the present invention relates to a horizontal pressure leaching kettle and a zinc sulfide concentrate leaching method using the horizontal pressure leaching kettle. Background technique [0002] In modern economic construction, zinc has become an indispensable and important metal raw material in large quantities. my country's zinc reserves rank first in the world, and it is an important producer and exporter of zinc. Zinc sulfide concentrate is the main raw material for zinc extraction, and zinc hydrometallurgy is the leading smelting technology and method in zinc smelting. [0003] Chinese patent publication CN101591733 discloses a method for iron-precipitation and vanadium removal in the abdomen of high-iron zinc sulfide concentrate by pressurized acid leaching. The leachate is discharged into the regulating tank and slowly added with a neutralizing agent, so that the iron in the leac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B19/20C22B3/02C22B3/04
CPCY02P10/20
Inventor 王吉坤周昌武何光深朱国邦吴建存钱建波杨国强汤绍鹏何文
Owner 云南永昌铅锌股份有限公司
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