Cast coke brick and its production method

A production method and technology for coke bricks, which are used in coke ovens, special forms of dry distillation, petroleum industry, etc., can solve the problems of insufficient calorific value, high coke consumption rate and high production cost, and achieve high calorific value, sufficient combustion, and high production efficiency. low cost effect

Inactive Publication Date: 2011-12-28
吴亚飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing foundry coke has the disadvantages of adding part of coking coal during production, high production cost, complicated process, insufficient calorific value, low strength, easy breakage, low furnace feeding rate, and high coke consumption rate.

Method used

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  • Cast coke brick and its production method
  • Cast coke brick and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: Low-sulfur anthracite coal enters the coal hopper, and the coal in the hopper is fed into the winnowing crusher for crushing through electromagnetic vibration feeding, with a diameter of 0.5-1 mm. The crushed coal is classified by the wind cyclone separator, the qualified material is discharged into the silo, and the coarse unqualified coal is returned to the pulverizer for further crushing. The pulverized coal in the silo is lifted into the hopper through the bucket elevator, and the pulverized coal in the bucket is fed into the preheating dryer through the disc feeder for preheating and drying, and then mixed with graphite, tar, The waste paper paddles are mixed together in the SH-10 kneading mixer, and then punched and formed by a pressure forming machine. The kiln is heated to 800°C for 9 days of carbonization, and the cast coke brick is obtained when it is naturally lowered to room temperature. The proportion of graphite, tar, and waste paper pulp is ...

Embodiment 2

[0015] Embodiment 2: The diameter of the pulverized low-sulfur anthracite is 1-2 mm. The kiln heating temperature is 1000 ℃, carbonization for 6 days. The ratio of graphite, tar, and waste paper pulp is by weight: 62% of low-sulfur anthracite, 15% of graphite, 2.5% of tar, and the balance is waste paper pulp. All the other are with embodiment 1.

Embodiment 3

[0016] Embodiment 3: The diameter of the pulverized low-sulfur anthracite is 0.5-1.5 mm. The temperature of kiln heating is 900 ℃, carbonization is 8 days. The ratio of graphite, tar, and waste paper pulp is by weight: 65% of low-sulfur anthracite, 12% of graphite, 3% of tar, and the balance is waste paper pulp. All the other are with embodiment 1.

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Abstract

The invention discloses casting coke bricks and a production method thereof, which belong to the production technology of coke for industrial use. The product is made of the following raw materials in weight ratio: 60%-72% of low-sulfur anthracite, 10%-15% of graphite, 2.5%-3% of tar, and the balance is waste paper pulp. The low-sulfur anthracite is crushed to a diameter of 0.5-2 mm. After preheating and drying, it is mixed with graphite, tar, and waste paper paddles in a kneading mixer, and then shaped by a pressure molding machine. The temperature of the kiln is raised to 800 Carbonize at ~1000°C for 6-9 days, and cool down to room temperature naturally to obtain cast coke bricks. No need to add coking coal during production, the production cost is low, and the process is simple. Cast coke bricks have high calorific value, fixed carbon can reach more than 85%, volatile content can be controlled below 1.5%, drum strength can reach more than 98%, high density, durable and flame-resistant. Ash content ≤ 10%, sulfur content < 0.4%, less ash content, low sulfur content, full combustion, less exhaust gas emission, and easy transportation.

Description

technical field [0001] The invention belongs to the coke production technology for industrial use. Background technique [0002] Generally, coke is used in metallurgical ironmaking and mechanical casting. Iron ore (the main component is iron oxide) needs to be reduced to iron during ironmaking, while casting is to melt pig iron into molten iron whose temperature and composition meet the requirements, so casting coke and The requirements for ironmaking coke are different. Foundry coke should have the characteristics of large lumpiness, low reactivity, small porosity, sufficient impact resistance to crushing strength, low ash and sulfur content, and most of them are machine-made casting coke, with anthracite and some coking coal as the main raw materials. It is mixed with carbonaceous binder, pressed and molded, and fired at medium temperature. The existing foundry coke has the disadvantages of adding part of coking coal during production, high production cost, complicated p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04C10B53/08
Inventor 吴亚飞
Owner 吴亚飞
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