Production process of magnesian slag pressing agents

A production process and slag pressing agent technology, applied in the field of recycling of steelmaking waste

Active Publication Date: 2014-01-01
XINJIANG ZHONGHE DAZHENG COMMERCE & TRADE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the above literature, it can be seen that the carbon-containing slag pressing agent can have positive significance for the smelting of th...

Method used

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  • Production process of magnesian slag pressing agents
  • Production process of magnesian slag pressing agents

Examples

Experimental program
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Embodiment

[0017] Take a 120-ton converter production line as an example; the production line is equipped with 3 converters with an engineering capacity of 120 tons, using 12 magnesia carbon brick ladle, and generating 120 tons of waste refractory materials every day;

[0018] 1) Pull the waste refractory materials (MgO content 78%) to the production plant, first pick out the industrial waste and iron-containing raw materials, and wait until it is cooled to below 30°C. Use Shandong Jiuchang Heavy Industry Technology Co., Ltd. The PC0606 jaw crusher produced by the company with an external size of 1300×1400×1400mm is crushed into particles below 50mm, and then added to the Raymond Mill of 4R3216 produced by Shanghai Jianshe Road and Bridge Machinery Equipment Co., Ltd., and processed into particles below 3mm. Powder, set aside.

[0019] 2) Purchasing CaCO produced by Xinjiang Aiweiergou Harmony Mining Company 3 50 tons of limestone powder with a content of 98% will be transported to the produc...

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Abstract

The invention provides a production process of magnesian slag pressing agents. Magnesium-carbide refractory is cooled to 25-30 DEG C, crushed into 5-50mm particles by using a PC0606 jaw crusher, then placed in a 4R3216 Ramon mill, and machined into powder smaller than 3mm for standby application; limestone powder with the CaCO3 content being 98% is selected for standby application; the magnesium-carbide refractory powder and the limestone powder of which the mass percent is 65:35 are mixed, placed in a VI forced stirring mixer to be mixed evenly, then placed in a steel slag powder ball press machine or a refractory ball press machine to be made into 30+/-5mm balls, and the balls are dried at the temperature of 30-50 DEG C and then can be used. The magnesian slag pressing agents are added 30-60s before a converter is toppled down at the smelting end point, and 25-35kg of the magnesian slag pressing agents are added to one ton of slag.

Description

Technical field [0001] The invention relates to the recycling of steel-making wastes. The magnesia-carbon bricks after steel-making are crushed and ground to stimulate their reaction activity. After compounding, they are prepared into a slag pressing agent and then reused in the use of converter steel-making. Effectively reduce production costs. Background technique [0002] The converter blows molten steel to the end, and some need to tilt the converter 75-90° to the slagging direction, pour out part of the slag, and perform temperature measurement and sampling operations. There are also converters that use sub-lance systems without temperature measurement and sampling. , Directly after the end of the conversion, the furnace is poured and the steel is tapped; because the converter is at the end of the conversion, the slag foaming degree is serious, no matter which way, when the converter is tilted, the slag foaming in the furnace will overflow from the furnace mouth. If no meas...

Claims

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Application Information

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IPC IPC(8): C21C5/36C21C7/04
Inventor 吴汉元
Owner XINJIANG ZHONGHE DAZHENG COMMERCE & TRADE
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