Bag dust removal ash separation process

A bag dust removal and ash removal technology, applied in the field of mineral processing

Active Publication Date: 2022-03-29
SHANXI TONGCAI IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a sorting process of bag dust removal ash, which solves the problem of bag dust removal ash sorting process in the related art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, this example proposes

[0036] The bag dust removal ash separation process includes the following steps:

[0037] Step A, the raw materials are unloaded by the transport vehicle into the screw mixing conveyor equipped with spray water and transported to the raw material yard for stacking. Water is added to the raw materials to prevent dust. Add water into the spiral mixer and stir into a fluid state,

[0038] Step B, the fluid material enters the crushing pulper, adds water and grinds it, and flows to the high frequency sieve by the diaphragm pump through the stirring mill.

[0039] Step C, the material on the high-frequency sieve is returned to the diaphragm pump for grinding, and step B is repeated, the under-screen material of the high-frequency sieve is pumped by the submerged pump into the elutriation machine for sorting, and the clear water tank is used for elutriation during the elutriation process The machine provides clean water, ...

Embodiment 2

[0052] Such as figure 1 As shown, based on the same idea as the above-mentioned embodiment 1, on the basis of embodiment 1, a process of centralized recovery of filtrate is also proposed.

[0053] On the basis of embodiment 1, step J is also included,

[0054] Filtrate recycling and sorting of zinc products, in step E, step G and step H, the acid-containing filtrate flowing out of the vacuum belt filter is pumped into the collection tank by the sewage pump, and alkali is added for neutralization, and the precipitate is pulverized to produce The pulp machine is fed into the filter press for dehydration to obtain zinc-containing products.

[0055] In this embodiment, in the recycling process of carbon powder, iron powder and tailings cake, zinc products can be further sorted, and the filtrate of the vacuum belt filter can be collected at the same time, so as to prevent random discharge of sewage and reduce environmental pollution.

[0056] Further, in step E, step G and step H...

Embodiment 3

[0058] Such as figure 1 As shown, based on the same concept as the above-mentioned embodiment 2, the dehydration filtrate is further recycled on the basis of embodiment 2.

[0059] specific,

[0060] In step J, the filtrate after dehydration by the filter press flows into the thickening tank in step H for recycling.

[0061] In step H, the clear water from the upper part of the dense pool flows to the clear water pool for recycling and reuse.

[0062] In this embodiment, the recycling rate of clear water can be improved, and the output of tailings in the subsequent steps of thick bottom flow concentration in step H and the output of zinc products after the filtrate is recovered after the tailings flow into the vacuum belt filter can also be recycled. Sorting to increase the output of each product.

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Abstract

The present invention relates to the technical field of mineral processing, and proposes a bag dust removal ash separation process in steel mills, which includes the following steps: the fluid material enters the diaphragm pump for grinding, and the ground mortar is lifted to the high-frequency screen by the crushing pulper, and the high-frequency screen The material under the sieve flows to the elutriation machine for sorting. The tailings slurry from the elutriation machine is added with foaming agent and collector and enters the mineralization tank. After mineralization, it enters the first flotation machine and the second flotation machine. Entering the first flow membrane gravity separator, the first flow membrane gravity separation machine produces three products, namely iron powder, middle ore and tailings, and further separates carbon powder, iron powder, tailings cake and salt. Through the above technical scheme, The problem of insufficient recovery and utilization of blast furnace bag dust removal ash in the related art is solved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a separation process of bag dust removal ash in steel mills. Background technique [0002] Blast furnace bag dust is the solid particles discharged from the ironmaking blast furnace during the smelting process. If it is treated as waste, it will cause great pollution to the environment and take up a lot of factory space, and the bag dust has a high The value of recycling, if treated as waste, is also a great waste of resources. [0003] The existing separation process of blast furnace bag dust removal ash is not enough to recycle. Most of them can only sort valuable elements such as carbon, iron and zinc from blast furnace bag dust removal ash, and the rest are still treated as waste. Recycling is not enough. Contents of the invention [0004] The invention proposes a bag dust removal ash sorting process, which solves the problem of the bag dust removal ash sorting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B1/00B03B7/00B03B9/00
CPCB03B1/00B03B7/00B03B9/00
Inventor 刘会岗
Owner SHANXI TONGCAI IND & TRADE
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