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Top-mounting coke oven mixed coal and formulation method

A technology for blending coal and coke ovens, applied in coke ovens, charging devices, petroleum industry, etc., can solve the problems of rough proportioning, affecting the stability of blast furnaces, and unreasonable composition of a single type of coal.

Inactive Publication Date: 2019-01-25
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Under normal circumstances, the engineers of coking enterprises control the ash and sulfur content of blended coal according to the ash content and sulfur content of single coal according to the method of summation, so as to determine the proportion of various single coals. The accuracy is not high, and the ingredients of each single coal are unreasonable, which will cause low coke quality and affect the stability of the blast furnace

Method used

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  • Top-mounting coke oven mixed coal and formulation method
  • Top-mounting coke oven mixed coal and formulation method
  • Top-mounting coke oven mixed coal and formulation method

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Embodiment Construction

[0029] The following describes the specific embodiments of the present invention in further detail through the description of the embodiments, the purpose is to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and to help them. Implement.

[0030] The invention uses weight as a unit to design several formulas to optimize the blending amount of five major types of coal such as 1 / 3 coke, gas, fertilizer, coke, and lean coal, and perform several sets of small coke oven experiments; it is concluded that the top-loading coke oven is matched with coal , Including the following weight percentages of raw coal: 1 / 3 coking coal 10-23%, lean coal 10-15%, coking coal 45-56%, gas fat coal 0-10% and fat coal 12-22%. Comparing the coke quality data after the small coke oven test, the best experimental ratio is preferred; preferably, the top-loaded coke oven blended coal includes the following...

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Abstract

The invention discloses top-mounting coke oven mixed coal and a formulation method. The top-mounting coke oven mixed coal includes, by weight percentage, 10-23% of 1 / 3 coking coal, 10-15% of lean coal, 45-56% of coking coal, 0-10% of gas-fat coal and 12-22% of fat coal. The plastic temperature range of the mixed coal is expanded through the adjustment of a formula, so that softening and melting sections of each single coal colloidal body in the coal can be better overlapped, so that it is ensured that the mixed coal is in a plastic state in a large temperature range in the coking process, thereby improving the bonding process and improving the uniformity of a coke structure.

Description

Technical field [0001] The invention belongs to the technical field of coal batching for top-loading coke ovens in the coking industry, and specifically relates to a top-loading coke oven with coal blending and a formulation method. Background technique [0002] In the large-scale blast furnace smelting technology, after the thermal strength of coke is increased and the size of the coke increases, the volume of the tuyere swirling zone and other parameters can be reduced, which is beneficial to the coal injection operation and is also conducive to the stability of the tuyere swirling zone. The fluctuation of coke particle size has a great influence on the lower hearth and taphole of the blast furnace, and also has a very obvious influence on the gas and liquid phase distribution inside the blast furnace. Therefore, the strength and particle size of coke are quality indicators that are of great concern to blast furnace operation. [0003] Over the years, the strength and particle s...

Claims

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Application Information

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IPC IPC(8): C10B31/00
CPCC10B31/00
Inventor 钱虎林张增兰汪开保夏鹏飞张晓宁李强方东霞方亮青
Owner MAANSHAN IRON & STEEL CO LTD
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