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Solid fuel for sintering

A technology of solid fuel and mixture, applied in solid fuel, fuel, petroleum industry and other directions, can solve the problems of high fuel consumption, poor comprehensive economic benefits, large quality fluctuation, etc., and achieve the effect of reducing the sintered solid fuel consumption

Pending Publication Date: 2022-01-28
BAOTOU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The fuel used in the sintering process mainly includes coke powder, anthracite and semi-coke. With the expansion of sintering production capacity, the demand for fuel increases accordingly. However, self-produced coke powder cannot meet the demand for sintering production, so it is necessary to purchase coke from outside Coke powder, anthracite and other fuels, but high-quality purchased coke powder and anthracite will vary greatly with market changes, and the resources are not sufficient
Purchased coke powder or anthracite with poor quality has high impurity content, low fixed carbon, large quality fluctuations, and large fuel consumption per ton of sintered ore during sintering production, resulting in poor comprehensive economic benefits

Method used

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  • Solid fuel for sintering

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Embodiment Construction

[0019] The specific embodiment of the present invention is described below in conjunction with embodiment:

[0020] A kind of solid fuel for sintering, its preparation method comprises the steps:

[0021] Step 1: Dry distillation coal crushing

[0022] Carrying out roller mill pretreatment on carbonized coal so that the particle size of 0.5-3mm accounts for 75%-95%;

[0023] Step 2: Prepare the mixture

[0024] Mix 4-8% of dry distillation coal pretreated in step 1, 76%-80% of iron ore powder for sintering, and 14-18% of flux, all of which are in mass percentage;

[0025] Further: the ratio of iron ore powder is 78%;

[0026] Further: the total proportion of the flux is 14% to 16%, preferably 16%. The flux includes: one or more of limestone, dolomite, and quicklime, and the ratio of the three is not limited;

[0027] Step 3: Granulation

[0028] Add water and mix the mixture obtained in step 2, and granulate in a cylinder granulator;

[0029] Wherein, the fixed carbon co...

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Abstract

The invention discloses a solid fuel for sintering. The solid fuelis prepared by the following steps of: 1, crushing dry distillation coal: carrying out roller grinding pretreatment on the dry distillation coal to ensure that the proportion of the dry distillation coal with the particle size of 0.5-3 mm is 75-95%; 2, preparing a mixture: mixing the dry distillation coal pretreated in the step 1 with iron ore powder for sintering and a flux according to a certain proportion; and 3, granulating: adding water into the mixture obtained in the step 2, uniformly mixing, and granulating in a cylinder granulator. The invention aims to provide the solid fuel for sintering, and high-quality sintered ore is provided for stable and smooth operation of a blast furnace under the condition of ensuring that sintered ore fuel and proportion are not changed. The invention aims to provide the solid fuel for sintering, and high-quality sintered ore is provided for stable and smooth operation of a blast furnace under the condition of ensuring that sintered ore fuel and proportion are not changed.

Description

technical field [0001] The invention relates to the field of sintered ore production, in particular to a solid fuel for sintering. Background technique [0002] The fuel used in the sintering process mainly includes coke powder, anthracite and semi-coke. With the expansion of sintering production capacity, the demand for fuel increases accordingly. However, self-produced coke powder cannot meet the demand for sintering production, so it is necessary to purchase coke Coke powder, anthracite and other fuels, but high-quality purchased coke powder and anthracite coal vary greatly with market changes, and the resources are not sufficient. Purchased coke powder or anthracite of poor quality has high impurity content, low fixed carbon, large quality fluctuations, and large fuel consumption per ton of sintered ore during sintering production, resulting in poor comprehensive economic benefits. Therefore, those skilled in the art are devoting themselves to developing a solid fuel us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L5/06C10L9/10C22B1/16
CPCC10L5/04C10L5/06C10L9/10C22B1/16
Inventor 刘周利白晓光何晓义李玉柱雷霆赵长奕李涛张永孙斌李春燕
Owner BAOTOU IRON & STEEL GRP