Bauxite ore dressed and ore cleaned tailings piling method

A bauxite and tailings technology, applied in chemical instruments and methods, solid waste removal, other chemical processes, etc., can solve the problems of high management and maintenance costs, hidden safety hazards of dam bodies, and large land occupation in the reservoir area. To achieve the effect of reducing construction investment and management and maintenance, reducing hazards and impacts, and saving costs

Active Publication Date: 2010-03-10
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the above-mentioned prior art, and provide a method that can effectively overcome the slow settlement speed of bauxite dressing tailings, large construction investment of tailings dams, large management and maintenance costs, and potential safety hazards in the dam body. The storage method of bauxite beneficiation and washing tailings with disadvantages such as large land occupation in the reservoir area, difficult filtration process, and high energy consumption

Method used

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  • Bauxite ore dressed and ore cleaned tailings piling method
  • Bauxite ore dressed and ore cleaned tailings piling method
  • Bauxite ore dressed and ore cleaned tailings piling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Taking the beneficiation tailings of Xiaoyi Bauxite Mine in Shanxi Province as samples, the chemical analysis results of the tailings are shown in Table 1, and the particle size distribution of the tailings is shown in Table 2. After medium flocculation and settlement, the underflow concentration is 62.31%, and after the action of 5# dehydrating agent provided by Ciba Company, the concentration of tailings reaches 71.64%. Take 1 ton of tailings from the dehydrated tailings and add the following A1 respectively , A2, A3, A4, A5 and A6 six - 200 mesh curing agent 50 kg, the components of the six curing agents are shown in Table 3, the mechanical stirring time is 10min, and they are discharged and piled up. They are used for the dry stacking effect of tailings See Table 4 for the angle of repose.

[0021] Table 1 Chemical analysis results of beneficiation tailings in Xiaoyi Bauxite Mine (%)

[0022]

[0023] The particle size distribution (%) of table 2 tailings

[00...

Embodiment 2

[0030] Taking the beneficiation tailings of Dengfeng Bauxite Mine in Henan as samples, the chemical analysis results of the tailings are shown in Table 5, and the particle size distribution of the tailings is shown in Table 6. After medium flocculation and settlement, the underflow concentration is 65.69%, and after interacting with the 5# dehydrating agent provided by Ciba, the concentration of the tailings reaches 73.37%. Take out 1 ton of tailings from the dehydrated tailings and add the following A1 respectively , A2, A3, A4, A5 and A6 six - 200 mesh curing agent 50 kg, the components of the six curing agents are shown in Table 3, the mechanical stirring time is 10min, and they are discharged and piled up. They are used for the dry stacking effect of tailings See Table 7 for the angle of repose. After the tailings reacted with the A2 curing agent were cured for 2 hours, 4 hours, 8 hours, 24 hours and 72 hours, the curing effect on the tailings was expressed in Table 8 by t...

Embodiment 3

[0040] Taking the washing tailings of Pingguo bauxite in Guangxi as samples, the chemical full analysis results of the tailings are shown in Table 9, and the particle size distribution of the tailings is shown in Table 10. After flocculation and settlement in the tank, the concentration of the underflow was 56.32%. After interacting with the 5# dehydrating agent provided by Ciba, the concentration of the tailings reached 64.52%. Take out 1 ton of tailings from the dehydrated tailings and add them to the table respectively. A1, A2, A3, A4, A5 and A6 six kinds of -200 mesh curing agent 80kg in 3, mechanical stirring time is 10min, discharged and stacked, their effect on dry stacking of tailings is shown in Table 11 by angle of repose.

[0041] The chemical analysis result (%) of table 9 ore washing slime

[0042] Component

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Abstract

The invention relates to a method for selecting, washing, and stacking the alumyte, wherein it uses concentrate machine, high-effect deep taper concentrate machine, and tail mineral house to treat thealumyte into bottom flow or deposited sand; or dewater the bottom flow and deposited sand until the solid content of tail mineral is higher than 600g / l, adds lime dust and one or several of anhedritite, coal ash, mineral slag and sulfate to be mixed and transferred into stack site, to be compressed and solidified. The invention can realize dry stack, to reduce the area and effect on around condition.

Description

technical field [0001] A method for stockpiling bauxite beneficiation and washing tailings, which relates to a method for dry stacking of tailings, in particular, the bauxite beneficiation and washing tailings with relatively high solid content use quicklime powder, anhydrite, powder Coal ash, slag powder, and sulfate are treated as curing agents to realize dry stacking of ore dressing tailings. Background technique [0002] At present, my country has accumulatively produced 5.97 billion tons of tailings, covering an area of ​​400km 2 The above is still growing at a rate of 300 million tons per year, and continues to expand the occupied area by about 20km every year 2 . More than 80% of the tailings in our country are stacked by the upstream method of damming, and a small part is stacked by the dry method after being filtered. [0003] In 2010, the beneficiation of bauxite in my country will form a production scale with an annual output of 6 million tons of concentrated o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B5/00C09K3/00
Inventor 李旺兴陈湘清陈志友陈兴华陈占华马俊伟胡秋云刘晰
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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