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Converter fly ash homogenization treatment briquetting method

A converter dust removal and homogenization treatment technology, which is applied in the direction of improving process efficiency, can solve the problems of low energy consumption, difficult pretreatment of converter dust removal ash pressure balls, and unsatisfactory

Active Publication Date: 2021-04-30
广西柳钢环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to provide a method for homogenizing the briquetting process of the converter dedusting ash to solve the problem that the pretreatment of the existing converter dedusting ash briquettes and its raw materials is difficult, and it is difficult to meet the technological requirements such as water content and meet the Recycling, less energy consumption, and environmental protection requirements

Method used

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  • Converter fly ash homogenization treatment briquetting method
  • Converter fly ash homogenization treatment briquetting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 The shown method for homogenizing the briquetting of the converter dedusting ash includes using an evolutionary processing device to perform homogenization treatment on the converter dedusting ash.

[0025] The homogenization treatment equipment includes a closed hopper 1 with a dust collector 2 on the top, a narrowed lower part and a discharge port at the smallest point, a discharge pipe 3 is installed obliquely at the discharge port at the bottom of the closed hopper 1, and a discharge pipe 3 A vibrating screen 6 is provided below.

[0026] The homogenization process includes: the converter dust 4 at 120°C is pneumatically transported into the powder ash bin by suction and discharge tanker or pipeline, and enters the closed hopper 1 after weighing, and the freshly cold-pressed dedusted ash pellets 5 are transported into the closed hopper at the same time 1. After the converter dust removal ash 4 and the dust removal ash pellets 5 are filled with the ...

Embodiment 2

[0028] Such as figure 2 The shown method for homogenizing the briquetting of the converter dedusting ash includes using an evolutionary processing device to perform homogenization treatment on the converter dedusting ash.

[0029] The homogenization treatment equipment includes a closed hopper 1 with a dust collector 2 on the top, a narrow lower part and a discharge port at the smallest point, a discharge pipe 3 is installed at the discharge port at the bottom of the closed hopper 1, and the inside of the closed hopper 1 A meter 7 is provided at the starting position where the airtight hopper shrinks, and a vibrating screen 6 is provided under the discharge pipe 3 .

[0030]The homogenization treatment includes: conveying the converter dust 4 at 120°C to the closed hopper 1 through the gas delivery pipeline, and the dust collector 2 discharges clean gas into the closed hopper 1. When the height of the dedusting ash from the starting position is 0.5 meters, stop conveying the...

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Abstract

The invention discloses a converter fly ash homogenization treatment briquetting method. The converter fly ash homogenization treatment briquetting method comprises the following step of conducting homogenization treatment on converter fly ash by using homogenization treatment equipment; the homogenization treatment equipment comprises a closed hopper and a discharge pipe, a dust remover is arranged at the top of the closed hopper, the lower part of the closed hopper is shrunk, a discharge hole is formed in the smallest part of the closed hopper, and a vibrating screen is arranged below the discharge pipe; the homogenization treatment comprises the following steps of feeding the converter fly ash into the closed hopper, conveying fly ash pellets into the closed hopper at the same time, and stopping feeding until the closed hopper is filled with the converter fly ash and the fly ash pellets; and after standing for 1 hour, conducting discharging, screening out the converter fly ash after operation with the fly ash pellets, and performing briquetting production in a production line. Compared with the prior art, the method can solve the problems that the existing converter fly ash briquetting and raw material treatment difficulty is large and the process requirements for the water content and the like are difficult to meet, and the requirements of cyclic utilization, low energy consumption and environmental protection are met by the method.

Description

technical field [0001] The invention relates to the technical field of pretreatment of converter dust removal ash in iron and steel manufacturing, in particular to a pretreatment method for converter dust removal ash pressure balls and raw materials. Background technique [0002] Converter dust is the solid waste dust generated in the process of converter steelmaking in iron and steel plants. Every ton of steel produced will produce 13-17kg of converter dust. Calculated on the basis of the production of 10 million tons of steel, 130,000 to 170,000 tons of converter dust will be produced. Ash, because of its small particle size, contains a small amount of harmful elements such as zinc, and contains about 50% iron, it will cause great pollution to the environment if it is disposed of randomly. At present, the general treatment method is to mix high-temperature converter dedusting dry ash or humidified converter dedusting ash with iron-containing aggregates with a particle size...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/24
CPCC22B1/2406Y02P10/20
Inventor 彭波金闯王志国龙顺红周鹤斌林振姚明张劼夏小明覃飞侯意生农光厦李华权
Owner 广西柳钢环保股份有限公司
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