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Conveying technology for iron tailing paste

A paste and process technology, applied in the field of iron tailings paste conveying process, can solve the problem of high investment in diaphragm pumps, achieve the effects of improving conveying efficiency, eliminating potential safety hazards, and reducing equipment operating costs

Inactive Publication Date: 2013-09-04
ANSTEEL GRP MINING CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The third method diaphragm pump investment is relatively high

Method used

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  • Conveying technology for iron tailing paste

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention is described further.

[0022] Such as figure 1 As shown, the iron tailings paste conveying process of the present invention comprises the following steps: the tailings with a concentration of 15%-25% are classified by a cyclone to form underflow coarse-grained product concentration 55%-65% and overflow fine-grained The product concentration is 10%-15%, which is characterized in that the underflow coarse-grained product classified by the cyclone is fed into the high-frequency dewatering screen, and the product on the high-frequency dewatering screen is tailings dry sand with a concentration of 80%-85% , while the under-screen product of the high-frequency dehydration screen returns to the cyclone to form a closed loop, and the overflow fine-grained product classified by the cyclone is transported to the paste thickener to the ore box by the slurry pump, and then flows by itself Into the paste thicke...

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Abstract

The invention relates to a conveying technology for iron tailing paste. The conveying technology comprises the steps of classifying tailings with the concentration of 15%-20% through a cyclone to form coarse-grain products with the concentration of 55%-65% and fine-grain products with the concentration of 10%-15%, base flow coarse-grain products classified by the cyclone are fed to a high-frequency dewatering screen, products over the high-frequency dewatering screen are tailing dry sand with the concentration of 80%-85%, while products below the high-frequency dewatering screen return to the cyclone to form a closed cycle. The conveying technology is characterized in the overflow fine-grain products classified by the cyclone are conveyed to a feeding box of a paste thickener through a slurry pump and flow into the paste thickener automatically, overflow water of the paste thickener returns to a concentrating mill and is reused as circulating water after being clarified through a clarifying tank, and paste thickener base flow slurry with the concentration of 65%-75% and the size fraction of -200 meshes and larger than 95% is conveyed to a tailing dam through a centrifugal pump. The conveying technology has the advantages that after implementation of the technology, the conveying efficiency of the iron tailing paste is improved effectively, operation costs of devices are low, the operation is easy, and elimination of potential risks of tailing ponds is facilitated.

Description

technical field [0001] The invention belongs to the field of mineral processing equipment, and in particular relates to an iron tailings paste conveying process. Background technique [0002] In order to eliminate the inherent safety hazards of traditional tailings ponds, several large mining companies in the world have carried out long-term exploration and technological transformation, gradually formed tailings dry stacking technology and applied it all over the world. The world's first high-concentration tailings dry storage site was built in Canada in the 1970s, and has undergone various explorations and transformations during its operation, accumulating a lot of experience. By the 1990s, the technology had matured and began to be promoted in other parts of the world. At present, this technology has been applied to North America, South America, Australia, Africa and Europe, especially in Canada, Australia and South America. The new tailings storage yards have basically a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/06F04D7/04
CPCY02W30/52
Inventor 李荣海于克旭戴兴宇张建平张玉辉
Owner ANSTEEL GRP MINING CO LTD
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