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Special steel drainage agent and preparation method thereof

A kind of technology of drainage agent and variety, applied in foundry equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of unstable self-opening rate, molten steel pollution, high cost, and achieve high refractoriness, pollution removal, and resistance to molten steel. The effect of erosion

Pending Publication Date: 2022-03-25
HENAN TONGYU METALLURGY MATERIALS GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the technical problem to be solved by the present invention is to provide a kind of drainage agent for variety steel to overcome the shortcomings of existing drainage agents used in variety steel such as unstable self-opening rate, high cost, and molten steel pollution.

Method used

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  • Special steel drainage agent and preparation method thereof
  • Special steel drainage agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take the waste magnesia carbon brick powder and waste silicon carbide brick powder, quartz powder, carbonaceous material and adhesive through grinding and iron removal treatment according to Table 1; after accurate measurement, the waste magnesia carbon brick powder and waste silicon carbide brick Add the powder into the granulation tray, add the binder and rotate and stir for 15 minutes, then add the carbonaceous material, continue to rotate and roll for 5 minutes, and transport it to the sifting device, sieve the material and send it to the storage tank. 0.3-1.5mm > 96%, of which 0.3-0.6mm > 40%, 0.6-1.0mm > 40%, 1.0-1.2mm > 15%; then transported into the drying system for drying, the drying temperature is 650 ° C, The exhaust air temperature is 150°C, the drying flow rate is controlled at 3 tons per hour, and the drum speed is 30r / min to ensure that the moisture content is within 0.1%. After being cooled by the cooling drum, it is packaged and put into storage.

Embodiment 2

[0041] Take the waste magnesia carbon brick powder and waste silicon carbide brick powder, quartz powder, carbonaceous material and adhesive through grinding and iron removal treatment according to Table 1; after accurate measurement, the waste magnesia carbon brick powder and waste silicon carbide brick Add the powder into the granulation tray, add the binder and rotate and stir for 10 minutes, then add the carbonaceous material, continue to rotate and roll for 5 minutes, and transport it to the sifting device, sieve the material and send it to the storage tank. 0.3-1.5mm > 96%, of which 0.3-0.6mm > 40%, 0.6-1.0mm > 40%, 1.0-1.2mm > 15%; then transported into the drying system for drying, the drying temperature is 630 ° C, The exhaust air temperature is 120°C, the drying flow rate is controlled at 2.5 tons per hour, and the drum speed is 25r / min to ensure that the moisture content is within 0.1%. After being cooled by the cooling drum, it is packaged and put into storage.

Embodiment 3

[0043] Take the waste magnesia carbon brick powder and waste silicon carbide brick powder, quartz powder, carbonaceous material and adhesive through grinding and iron removal treatment according to Table 1; after accurate measurement, the waste magnesia carbon brick powder and waste silicon carbide brick Put the powder into the granulation tray, add the binder and rotate and stir for 12 minutes, then add the carbonaceous material, continue to rotate and roll for 5 minutes, and transport it to the sifting device, sieve the material and send it to the storage tank. 0.3-1.5mm > 96%, of which 0.3-0.6mm > 40%, 0.6-1.0mm > 40%, 1.0-1.2mm > 15%; then transported into the drying system for drying, the drying temperature is 670 ° C, The exhaust air temperature is 170°C, the drying flow rate is controlled at 3 tons per hour, and the drum speed is 30r / min to ensure that the moisture content is within 0.1%. After being cooled by the cooling drum, it is packaged and put into storage.

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Abstract

The invention provides a variety steel drainage agent and a preparation method thereof, and belongs to the technical field of self-consumption cut-off devices. The drainage agent is prepared from the following raw materials in parts by weight: 30-70 parts of waste magnesia carbon brick powder, 10-40 parts of waste silicon carbide brick powder, 0-30 parts of quartz powder, 1-8 parts of a carbonaceous material and 2-8 parts of an adhesive. The technical scheme is matched with a specific preparation process, and the produced variety steel drainage agent is resistant to high temperature, stable in performance and good in fluidity; waste materials are recycled, the manufacturing cost is low, energy is saved, environment friendliness is achieved, and the particle size component segregation phenomenon is avoided; and the self-opening rate in use can be basically stabilized at 99.8% or above.

Description

technical field [0001] The invention belongs to the technical field of self-consumption shut-off devices, and in particular relates to a variety steel drainage agent and a preparation method thereof. Background technique [0002] Ladle draining agent is an amorphous refractory material with high temperature resistance, stable performance at high temperature and corrosion resistance to molten steel. Conventionally, it is a kind of bulk refractory material that is composed of several natural granular materials, mechanically stirred evenly, dried, and filled in the nozzle at the bottom of the ladle. Add it before the ladle receives molten steel to prevent molten steel from entering the nozzle. Moreover, it has stable performance at high temperature and does not sinter as a whole. When pouring steel, it will fall quickly after opening with the ladle slide, which plays a role in guiding the steel flow. It is an important link for the smooth progress of high-speed continuous cast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/48
CPCB22D41/48
Inventor 李秀锋李秀忠王金培王勇源
Owner HENAN TONGYU METALLURGY MATERIALS GRP
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