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Method for heightening two-stage roasting arsenic collecting efficiency and special equipment

A special equipment and two-stage roasting technology, which is applied in the field of metallurgy, can solve the problems of frequent parking and cleaning, low arsenic collection rate, etc., and achieve the effects of reducing labor intensity, easy operation, and increased gas extraction

Inactive Publication Date: 2010-01-13
SHANDONG HUMON SMELTING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for improving the arsenic recovery rate of the two-stage roasting process, which mainly solves the problems of low arsenic recovery rate and frequent parking and cleaning in the existing two-stage roasting process

Method used

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  • Method for heightening two-stage roasting arsenic collecting efficiency and special equipment
  • Method for heightening two-stage roasting arsenic collecting efficiency and special equipment

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Embodiment 1

[0016] Example 1, see figure 1 , processed into 1-section roaster 1 and 2-section roaster 5, both roasters are cooled by cooling tube bundles, the top of 1-section roaster 1 is sealed and connected with the top of 1# cyclone device 2 through pipelines, and then the The top of 1# cyclone device 2 is sealed and connected with the upper part of 2# cyclone device 3 through the pipeline, the top of 2# cyclone device 3 is sealed and connected with the 1# furnace cooler 4 through the pipeline, and the 1# cyclone device 2, 2# The bottom ends of cyclone device 3 and 1# furnace cooler 4 are communicated with 2 sections of roasting furnace 5 by pipeline, and the top of 2 sections of roasting furnace 5 is sealed and connected with the top of cyclone device 6 by pipeline, and the top of cyclone device 6 The top is sealed and connected with the 2# furnace cooler 7 through the pipeline, and then the lower part of the second-stage roasting furnace 5 and the cyclone device 6 and the bottom end...

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Abstract

The invention discloses a method for heightening two-stage roasting arsenic collecting efficiency and special equipment. The method comprises the following steps: furnace gas, which is generated by one-stage roasting, is dedusted by means of reducing temperature through a two-stage whirlwind furnace cooler, and is again dedusted by means of removing electricity with furnace gas which is generated by two-stage roasting and be dedusted by means of reducing temperature through a one-stage whirlwind furnace cooler; the temperature of the dedusted furnace gas is reduced through a quench tower, and the arsenic of the dedusted furnace is recycled through a cloth bag arsenic collector; the remaining furnace gas is used for producing aid; and the dust and roasting slag, which are collected by the furnace cooler by means of the one-stage roasting, are put into the two-stage roasting. The equipment comprises a one-stage roasting furnace (1) and a two-stage roasting furnace (5). The equipment is characterized in that the one-stage roasting furnace (1) is connected with the two whirlwind devices and the furnace cooler by means of sealing in sequence; the bottom end of the one-stage roasting furnace (1) is communicated with the two-stage roasting furnace (5); the two-stage roasting furnace (5) is connected with one of the whirlwind devices and the furnace cooler by means of sealing in sequence; the bottom of the two-stage roasting furnace (5) is connected with a water quenching system; and the furnace cooler is communicated with an electric deduster (8), a cold collecting tower (9) and a cloth bag arsenic collecting device (10) in sequence. The invention has high arsenic collecting efficiency, does not frequently stop vehicles to clean the cloth bag, and increases productivity effect.

Description

Technical field: [0001] The invention relates to the technical field of metallurgy, in particular to a method for increasing the arsenic recovery rate of two-stage roasting, which is suitable for the two-stage roasting arsenic recovery process of arsenic-containing complex gold concentrate. Background technique: [0002] At present, the composition of gold concentrate for roasting in the metallurgical industry is relatively complex, and the requirements for the operation of the large furnace are more stringent. The level of sulfur grade directly affects the stability of the furnace temperature operation. To adjust the furnace temperature, but these methods directly or indirectly affect the processing capacity of ore powder, and play a certain role in limiting the increase in production capacity. [0003] In the existing two-stage roasting system, the furnace gas of 1# roaster and 2# roaster is dedusted by cyclone respectively, and then enters the same furnace cooler to cool ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B30/04
Inventor 曲胜利张俊峰曲华东姜培胜张宗明王爱民
Owner SHANDONG HUMON SMELTING
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