A roasting method for roasting oxidized refractory gold concentrate powder using a rotary kiln
A technology for refractory gold and concentrate powder, which is applied in the field of oxidative roasting of refractory gold concentrate powder, can solve problems such as inability to extract gold in a large scale, and achieve the effects of reducing investment costs, reducing energy consumption, and fully reacting
Active Publication Date: 2019-02-22
唐丽娜
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Problems solved by technology
[0004] In the prior art, the chemical metallurgical treatment of high-arsenic and high-iron refractory metallurgical ores, the extraction of gold and the comprehensive utilization of arsenic and iron have the following technical problems: the method of chemical catalysis cannot be used to extract gold in a large scale and in large quantities
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[0034] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0035] A method for roasting oxidized refractory gold concentrate powder by using a rotary kiln, comprising the following steps:
[0036] Step 1. Dry the kiln of the rotary kiln. Sprinkle the pulverized coal into the kiln body 2 of the rotary kiln, and then ignite the pulverized coal in the kiln body 2. When the temperature in the kiln tail 3 rises to 150-250°C, pass The kiln body rotating drive device 5 drives the inclined kiln body 2 to rotate;
[0037] Step 2, preparation of roasting materials, prepare 10 parts of refractory gold concentrate powder and 2-3 parts of coal, wherein, coal is crushed and screened to form coal powder, coal powder and gold concentrate powder are fully mixed, Each component is measured by mass;
[0038] Step 3. Put the fully mixed coal powder and refractory gold ore powder into the tail end of the kil...
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Abstract
The invention discloses a roasting method for roasting and oxidizing refractory gold ore powder through a rotary kiln. The roasting method for roasting and oxidizing the refractory gold ore powder through the rotary kiln comprises the following steps that 1, the rotary kiln is dried; 2, 10 parts of the refractory gold ore powder and 2-3 parts of coal are prepared; 3, materials are put into a kiln body, and a kiln body rotation drive device drives the kiln body to rotate at the uniform speed; 4, the preheating treatment section of the kiln body conducts dry and dehumidification treatment on coal powder and the refractory gold ore powder; 5, roasting treatment is conducted in a first roasting treatment section; 6, roasting treatment is conducted in a second roasting treatment section; 7, a mixture treated in the second roasting treatment section enters in a cooling treatment section; and 8, the mixture treated by the cooling treatment section is recycled through a discharging outlet. According to the roasting method, the refractory gold ore powder can be subjected to batch processing.
Description
technical field [0001] The invention relates to the technical field of oxidizing and roasting refractory gold concentrate powder, in particular to a roasting method for roasting and oxidizing refractory gold concentrate powder using a rotary kiln. Background technique [0002] Refractory gold concentrate powder refers to gold concentrate powder or gold concentrate powder that is difficult to beneficiate and smelt, contains arsenic, organic carbon, and fine-grained sulfide-coated gold, and does not contain silicate-coated gold. As the use of gold becomes wider and wider, the consumption is also increasing, and the easy-to-handle gold ore is decreasing day by day. Low-grade, arsenic-containing, organic-carbon-containing, fine-grained refractory metallurgical ore has become the main raw material for gold production in my country. The reason why this ore is difficult to smelt is mainly manifested in: fine-grained gold or submicroscopic gold exists in the sulfide ore in the form o...
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IPC IPC(8): C22B1/02C22B11/08
CPCC22B1/02C22B11/08
Inventor 余勇唐丽娜唐一昂
Owner 唐丽娜