All-tailings concentrating adglutinate new process

A concentrated gel and new process technology, which is applied in the new process of tailings concentration and cementation, can solve the problems of surface discharge of mine tailings, hazards to the living environment, life and property safety, and increase in underground gobs, achieving efficient concentration and convenient Effects of organization and application

Inactive Publication Date: 2007-06-13
SHANDONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0002] Mine tailings are one of the three industrial wastes. The traditional extensive resource development mode has caused a large amount of mine tailings to be discharged on the surface, while underground goafs have continued to increase, causing great harm to the living environment of human beings and the safety of life and property. Hidden danger

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  • All-tailings concentrating adglutinate new process

Examples

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Effect test

Embodiment 1

[0011] Example 1, a graded concentration cementation test was carried out using the magnetic separation tailings of a certain mine in Hebei as raw materials. The concentration of the tailings is about 10%, and the content of less than 200 mesh accounts for 84%. The test uses a Φ100mm concentrated hydrocyclone. When the ore feeding pressure is 0.15MPa and the sand outlet is 8mm, the yield rate can be 75.14%, and the concentration of the hydrocyclone is 69.15%. The yield rate is 24.86%. The overflow of the cyclone with a concentration of 2.79% enters the thickener. When the amount of polyacrylamide (6 million molecular weight) flocculant is 20g / t (according to the amount of dry mineral), the return water of the thickener can be clear water, and when the underflow When the discharge concentration is 34.82%, the cyclone sand settling and thickener bottom flow are combined to obtain a final tailings concentration of 55.54%. When the amount of high-water single slurry cement is 10-12...

Embodiment 2

[0012] In Example 2, a concentration test was carried out using flotation tailings from a certain mine in Shandong as raw materials. The concentration of the tailings was about 35%, and the content of less than 200 mesh accounted for 50%. The test uses a Φ250mm concentrated hydrocyclone. When the ore feeding pressure is 0.12MPa and the sand outlet is 35mm, the yield rate can be 65%, the concentration is 70%, and the yield rate is 35%. The overflow of the cyclone with a concentration of 18% enters the thickener. When the amount of polyacrylamide (6 million molecular weight) flocculant is 10g / t (according to the amount of dry mineral), the overflow of the thickener can be realized as clean water. When the underflow When the discharge concentration is 45%, the cyclone grit and thickener underflow are combined to obtain a final tailings concentration of 58%. When the amount of high-water single slurry cement is 8-10% of the tailings, The strength of the cemented sample can reach m...

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Abstract

The present invention relates to a whole tailings concentration and cementation new process. For low-concentration tailings said invention adopts a step concentration technique formed from hydraulic cyclone and thickener. The coarse grain concentrate obtained by said hydraulic cyclone and fine grain concentrate obtained by said thickener can be singly used for making cementation filling, the coarse grain concentrate also can be mixed with the fine grain concentrate, and can be used for making whole tailings cementation filling.

Description

Technical field [0001] The patent of the present invention relates to a new process of tailings concentration and cementation. Concentration hydrocyclones and thickeners are used to achieve high-efficiency concentration of low-concentration tailings, and the removed clear water can be used as production return water. The coarse-grained concentrated product obtained by cyclone classification and the fine-grained concentrated product produced by the thickener can be cemented and filled separately, and the coarse-grained concentrated product can also be mixed with the fine-grained concentrated product for full-tail cemented filling, which is convenient Flexible organization and application of mine production; the concentrated and cemented tailings can be used to fill goafs, which comprehensively solves the problems of surface stockpiling of tailings and treatment of goafs, and creates a new model of clean mine production. Background technique [0002] Mine tailings are one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 吕宪俊崔学奇邱俊葛会超胡术刚
Owner SHANDONG UNIV OF SCI & TECH
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