High-activity steel slag micro-powder preparation system

A steel slag powder and preparation system technology, applied in lighting and heating equipment, grain processing, dryers, etc., to achieve the effects of eliminating hidden dangers in production safety, improving combustion rate, and reducing RO phase content

Active Publication Date: 2021-04-09
TIANJIN CEMENT IND DESIGN & RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the technical problems existing in the known technology and provide a solution to the problems of poor grindability, low activity and limited drying heat source of the existing steel slag powder, which is used to reduce the energy consumption of steel slag grinding and improve the efficiency of steel slag powder. Activity, ensure the drying effect of the system, and promote the high-activity steel slag micropowder preparation system that promotes the recycling of steel slag solid waste

Method used

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Embodiment 1

[0059] The high-activity steel slag powder preparation system includes a raw material warehouse, a traveling biomass combustion furnace, a screening device, a crushing device, a vertical mill grinding device, a dust collection device, an activator preparation device, and a finished product warehouse. The materials in the raw material warehouse are conveyed The device A is transported to the screening device, and the unqualified materials of the screening device are transported to the crushing device through the conveying device B, and the discharge port of the crushing device is connected to the conveying device A, and the qualified materials of the screening device pass through The reamer is transported into the mill and transported to the vertical mill grinding device. The powder separator is installed in the vertical mill grinding device. The qualified finished products after sorting are collected by the dust collection device. The reamer is transported to the magnetic separ...

Embodiment 2

[0065] The advancing type biomass burning furnace includes a moving grate bed structure of the biomass burning furnace inside it, and the moving type grate bed structure includes a driving device and several traveling grate plates arranged in parallel, and the driving device drives the The traveling grate reciprocates along its central axis, and the traveling grate moves back in batches after moving to the slag outlet of the biomass combustion furnace, and the retreating traveling grate is separated by at least one traveling grate open.

[0066] When one of the rows moves backwards, because the ash is subjected to the pressure of the upper material, its own gravity and the forward thrust of its adjacent row units, the backward movement speed of the ash is only 20% of the forward speed, thus Realize the gradual advancement of ash and slag, and realize the effect of automatic slag removal.

[0067] Furthermore, it can also be considered in the present invention that the driving...

Embodiment 3

[0083] The traveling biomass burner uses biomass fuel.

[0084] The use of biomass combustion furnaces instead of coal-fired or gas-fired furnaces as the heat source for the steel slag grinding system reduces the amount of harmful gases such as nitrogen oxides caused by coal combustion during the preparation of steel slag fine powder, which is beneficial to environmental protection and reduces non-renewable gas such as coal combustion. Use of resources: Biomass fuel comes from a wide range of sources, and wood chips and rice husks can be used, which solves the difficult problem of traditional wood chips and rice husks, and reduces the fire risk of rice husks burned in farmers' cultivated land.

[0085] Further speaking, it can also be considered in the present invention that the biomass combustion furnace is fed by a conveying reamer, and a steady flow bin is provided at the feed inlet of the conveying reamer, and the blower A and the blower B are connected to the combustion fu...

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Abstract

The invention belongs to the technical field of steel slag micro-powder preparation, and particularly relates to a high-activity steel slag micro-powder preparation system which comprises a raw material bin, an advancing type biomass combustion furnace, a screening device, a crushing device, a vertical mill grinding device, a dust collecting device, an excitant preparation device and a finished product bin. Materials in the raw material bin are conveyed to the screening device through a conveying device A, unqualified materials of the screening device are conveyed to the crushing device through a conveying device B, a discharging port of the crushing device is connected with the conveying device A, and qualified materials of the screening device are conveyed into the vertical mill grinding device through a mill feeding conveying reamer. The high-activity steel slag micro-powder preparation system solves the problems that existing steel slag micro-powder is poor in grindability, low in activity and limited in drying heat source, and is used for reducing steel slag grinding energy consumption, improving the activity of the steel slag micro-powder, ensuring the drying effect of the system and promoting steel slag solid waste recycling.

Description

technical field [0001] The invention belongs to the technical field of steel slag fine powder preparation, and in particular relates to a high-activity steel slag fine powder preparation system. Background technique [0002] Existing techniques and drawbacks: [0003] Steel slag is a by-product of the steelmaking process, accounting for 10% to 15% of crude steel output. The composition of steel slag is complex and changeable, the main reason is that the furnace type of steelmaking furnace is different and the steelmaking process is different, even the chemical composition of steel slag from different furnaces in the same steelmaking plant is also very different. [0004] Since the steel slag contains 5-15% metallic iron and 14-30% ferromagnetic substances, it is very difficult to effectively utilize the steel slag. The content of RO phase in steel slag is about 30%, and the activity of RO phase is lower than tricalcium silicate and dicalcium silicate. Therefore, reducing t...

Claims

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Application Information

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IPC IPC(8): C04B7/147C04B7/38C04B5/00B02C21/00F24H3/02F24H9/18F23J15/06F26B21/00
CPCC04B7/147C04B7/38C04B5/00B02C21/00F24H3/027F24H9/1845F26B21/001Y02P40/10C04B18/142
Inventor 杜鑫何小龙聂文海刘畅赵剑波
Owner TIANJIN CEMENT IND DESIGN & RES INST
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