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Method for improving compression forming rate of limestone mud cakes

A technology of pressing and forming limestone, which is applied in the field of steelmaking, can solve the problems of low utilization rate of converter sludge and ash, and achieve the effects of solving treatment costs, increasing pressing yield, and reducing dust emissions

Inactive Publication Date: 2018-09-28
MCC BAOSTEEL TECH SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of method that improves limestone mud cake compression forming rate, is used to solve the problem of low utilization rate of converter sludge and dedusting ash in steelworks in prior art

Method used

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  • Method for improving compression forming rate of limestone mud cakes
  • Method for improving compression forming rate of limestone mud cakes
  • Method for improving compression forming rate of limestone mud cakes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The limestone mud cake that adopts in the present embodiment comprises following raw material composition and weight part:

[0035]

[0036]

[0037] The method for improving limestone mud cake compression molding rate in the present embodiment may further comprise the steps:

[0038] Dry the limestone mud cake in the air to reduce the moisture content of the mud cake so that the mud cake changes from lumpy to powdery. During the drying process, add 5wt% quicklime to the limestone mud cake and stir evenly; after drying in the air, measure the moisture content 8wt%;

[0039] Pile and digest the dried limestone mud cake to form a digestion material for 2 hours to form a digestion material;

[0040] Pulverize and stir the digestion material to form a mixture; add binder water glass accounting for 5wt% of the digestion material in the form of spray during the pulverization and stirring process; if necessary for pulverization and stirring, you can also spray appropria...

Embodiment 2

[0044] The limestone mud cake that adopts in the present embodiment comprises following raw material composition and weight part:

[0045]

[0046] The method for improving limestone mud cake compression molding rate in the present embodiment may further comprise the steps:

[0047] Dry the limestone mud cake in the air to reduce the moisture content of the mud cake so that the mud cake changes from lumpy to powdery. During the drying process, add 6wt% quicklime to the limestone mud cake and stir evenly; after drying in the air, measure the moisture content is 10wt%;

[0048] Pile and digest the dried limestone mud cake to form a digestion material for 3 hours to form a digestion material;

[0049] Pulverize and stir the digestion material to form a mixture; add binder water glass accounting for 6wt% of the digestion material in the form of spray during the pulverization and stirring process; if necessary for pulverization and stirring, appropriate water can also be spraye...

Embodiment 3

[0053] The limestone mud cake that adopts in the present embodiment comprises following raw material composition and weight part:

[0054]

[0055]

[0056] The method for improving limestone mud cake compression molding rate in the present embodiment may further comprise the steps:

[0057] Dry the limestone mud cake in the air to reduce the moisture content of the mud cake so that the mud cake changes from lumpy to powdery. During the drying process, add 7wt% quicklime to the limestone mud cake and stir evenly; after drying in the air, measure the moisture content 6wt%;

[0058] Pile and digest the dried limestone mud cake to form a digestion material for 3 hours to form a digestion material;

[0059] Pulverize and stir the digestion material to form a mixture; add binder water glass accounting for 8wt% of the digestion material in the form of spray during the pulverization and stirring process; if necessary for pulverization and stirring, appropriate water can also be ...

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Abstract

The invention provides a method for improving a compression forming rate of limestone mud cakes. The method comprises the following steps that the limestone mud cakes are airing dried until the moisture content is not more than 10 wt% and below; a digestion material is formed by stacking and digesting; the digested material is crushed and stirred to form a mixture material; and a binding agent water glass which accounts for 5 wt%-10 wt% of the digestion material is added during the crushing and stirring process; and the mixture material enters a ball pressing machine to be pressed and formed.According to the technical scheme, the method is simple and feasible, the ball forming rate of the limestone mud cakes is over 85% and above, each limestone mud cake freely drops from a two meter height to a cement terrace at one time, and no more than 5 blocks are broken after each limestone mud cake being crushed; the compression forming rate of the limestone mud cakes is effectively improved byadopting the method, and a daily amount of a limestone mud cake ball compression production line is 80 tons.

Description

technical field [0001] The invention relates to the field of steelmaking, in particular to a method for increasing the compression molding rate of limestone mud cake. Background technique [0002] In recent years, my country's steelmaking converters have adopted the fourth-generation wet method and the introduced dry method; making breakthroughs in converter gas purification technology. [0003] The new OG is a special technology of German Lurgi Company, and Kawasaki Heavy Industries of Japan enjoys the right to use this technology. Compared with the old OG method, the new OG method has higher dust removal effect and lower water consumption. However, it still uses a large amount of turbid water to circulate and wash dusty gas. , water consumption and power consumption are still high. [0004] LT dry method is a dry purification system for converter flue gas purifier gas recovery successfully developed by German Lurgi Company and Thyssen Iron and Steel Works. The "dry" syst...

Claims

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Application Information

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IPC IPC(8): C21C7/00
CPCC21C7/00
Inventor 李卫东龚滔陈小东陈红成温忠义
Owner MCC BAOSTEEL TECH SERVICE
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