Switching method for first-stage peroxide-roasting at high temperature and second-stage underoxide-roasting at low temperature and equipment thereof

A peroxy-baking, high-temperature technology, used in lighting and heating equipment, waste heat treatment, furnace components, etc., can solve problems such as inability to achieve refractory gold mines

Inactive Publication Date: 2012-08-22
福建金山黄金冶炼有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the disadvantage that the traditional roasting method cannot use the same system to process refractory gold ores with different properties, and proposes a switching method and equipment for one-stage high-temperature peroxygen roasting and two-stage low-temperature oxygen-deficient roasting, and realizes that the two-stage roasting system has simultaneous The first-stage furnace roasting and two-stage furnace roasting functions have been introduced, creating a precedent in the industry, completely solving the problem of adding different roasting systems according to the nature of refractory gold mines, and truly realizing the comprehensive recycling of gold mine resources with different properties without adding main equipment and equipment. Plant investment, providing a broad space and technical support for the survival and development of the enterprise and the sustainable development of the gold industry

Method used

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  • Switching method for first-stage peroxide-roasting at high temperature and second-stage underoxide-roasting at low temperature and equipment thereof
  • Switching method for first-stage peroxide-roasting at high temperature and second-stage underoxide-roasting at low temperature and equipment thereof
  • Switching method for first-stage peroxide-roasting at high temperature and second-stage underoxide-roasting at low temperature and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-copper refractory gold concentrate, the chemical analysis results of the ore sample are shown in Table 1.

[0024] Table 1 Analysis results of chemical composition of high-copper refractory gold concentrate / %

[0025]

[0026]

[0027] The method and equipment for switching between one-stage high-temperature peroxygen roasting and two-stage low-temperature hypoxic roasting, when processing high-copper gold concentrates, adopt a one-stage high-temperature peroxygen process for roasting, including the following steps in sequence.

[0028] Step 1: Put the high-copper gold concentrate with a particle size of -200 mesh and 89.5% into the mechanical agitation slurry tank to adjust to a slurry with a slurry concentration of about 70%, and then use double-ring atomization feeding technology to blow into the first section The boiling layer of the boiling roaster;

[0029] Step 2: Carry out a stage of roasting for 60 minutes at a temperature of 630°C and oxygen of 1...

Embodiment 2

[0034] A high-carbon refractory gold concentrate, the chemical analysis results of ore samples are shown in Table 3.

[0035] Table 3 Analysis results of chemical composition of high-carbon refractory gold concentrate / %

[0036]

[0037] The method and equipment for switching between one-stage high-temperature peroxygen roasting and two-stage low-temperature hypoxic roasting, when processing high-carbon gold concentrate, adopts one-stage high-temperature peroxygen process for roasting, including the following steps in sequence.

[0038] Step 1: Put the high-carbon gold concentrate with a particle size of -320 mesh and 81.46% into the mechanical agitation slurry tank to adjust to a slurry with a slurry concentration of about 70%, and then use double-ring atomization feeding technology to blow into the first section The boiling layer of the boiling roaster;

[0039] Step 2: Carry out one-stage roasting for 90 minutes at a temperature of 680°C and 130% of the theoretically requ...

Embodiment 3

[0045] Table 5 shows the chemical analysis results of a high-arsenic refractory gold concentrate.

[0046] Table 5 Analysis results of chemical composition of high-arsenic refractory gold concentrate / %

[0047]

[0048] The method and equipment for switching between one-stage high-temperature peroxygen roasting and two-stage low-temperature under-oxygen roasting, when processing high-arsenic gold concentrates, adopt the I-stage under-oxygen and II-stage peroxygen processes for roasting, including the following steps in sequence.

[0049] Step 1: Add -200 mesh high-arsenic gold concentrate with a density of 91.08% into the mechanical agitation slurry mixing tank to adjust the slurry with a slurry concentration of about 70%, and then use the double-ring atomization feeding technology with its own intellectual property rights. material;

[0050] Step 2: Carry out stage I roasting for 60 minutes at a roasting temperature of 580°C and 90% of the theoretically required amount of...

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Abstract

The invention overcomes the defect that a gold ore with different properties and difficult to deal with can not be treated by the same system through a traditional roasting method, and provides a switching method for a first-stage peroxide-roasting at a high temperature and a second-stage underoxide-roasting at a low temperature and equipment thereof, thus the second-stage roasting system with functions of the first-stage furnace roasting and the second-stage furnace roasting at the same time is realized, and a precedent for the industry is created. The problem that different roasting systems are additionally built according to the property of the gold ore difficult to deal with is thoroughly solved, the gold ore resource with different properties can be comprehensively recycled while the investment on main equipment and workshops are not needed to add, and technical supports are provided for survival and development of enterprises and continuous development of the gold industry.

Description

1. Technical field [0001] The present invention relates to a treatment method and equipment for refractory gold ore, in particular to a method for switching between one-stage high-temperature peroxygen roasting and two-stage low-temperature hypoxic boiling roasting for refractory gold concentrates containing copper, carbon or arsenic, and equipment. 2. Background technology [0002] With the large-scale mining of gold mines, easily leaching gold ore resources are gradually exhausted, and refractory gold ore will become the main resource of the gold industry in the future. my country is relatively rich in refractory gold ore resources. According to the information and data currently held by China Gold Group Corporation, the total amount of metal in refractory gold ore resources should be between 1500 and 2000t. Domestic refractory gold ore resources are in the proven reserve The proportion of reserves is also recognized as about 1 / 3. Complex associated gold ores containing a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B1/10C22B11/00C22B15/00F27D17/00
Inventor 廖元杭衷水平黎志栋吴在玖申开榜李胜春谭希发
Owner 福建金山黄金冶炼有限公司
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