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Burnt aluminum-carbon brick for torpedo hot metal mixer car and mfg. method thereof

A manufacturing method and technology of aluminum-carbon bricks are applied in the field of refractory materials for industrial furnace equipment, which can solve the problem of no use of iron mixing trucks and the like.

Inactive Publication Date: 2005-04-20
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently developed aluminum-carbon bricks are mainly developed for blast furnace refractory materials to resist molten iron erosion and anti-alkali metal melting loss mechanism, which is quite different from the main melting loss mechanism of mixed iron cars under the three-removal process, so it has not been developed so far. Example of use on a mixed iron car without the three-off process

Method used

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  • Burnt aluminum-carbon brick for torpedo hot metal mixer car and mfg. method thereof
  • Burnt aluminum-carbon brick for torpedo hot metal mixer car and mfg. method thereof
  • Burnt aluminum-carbon brick for torpedo hot metal mixer car and mfg. method thereof

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Experimental program
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Embodiment

[0041] According to the following operation steps, according to the proportion and process parameters in Table 1, the fired aluminum-carbon brick of the present invention is prepared, and the physical and chemical performance indicators of the fired aluminum-carbon brick are prepared.

[0042] (1) Each raw material is weighed according to the proportioning requirements in the formula;

[0043] (2) water bath and heating are carried out to resin and special-grade alumina respectively;

[0044] (3) Mixing, trapped material, trapped material time ≥ 24 hours;

[0045] (4) compression molding;

[0046] (5) After drying, it is fired and kept warm in a reducing atmosphere.

[0047] parameters

[0048] The aluminum-carbon brick uses corundum and graphite as the main raw materials, and specially adds plate-shaped corundum to improve slag erosion resistance and thermal shock stability; uses phenolic resin as a binder, boron glass as a special antioxidant, and adds a certain ...

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Abstract

The invention discloses an aluminum-carbon brick for a mixed-iron vehicle and a manufacturing method thereof. Corundum, graphite, bauxite and metal silicon are used as main raw materials, and plate-shaped corundum is added to improve slag erosion resistance and thermal shock stability; Phenolic resin is used as a binding agent, boron glass is used as a special antioxidant, and a certain amount of additives are added; each raw material is prepared after mixing, trapping, firing and keeping warm under a reducing atmosphere. The aluminum-carbon brick of the present invention can be It is used in the mixed iron car for the "three removal" molten iron pretreatment, and has good anti-oxidation and alkali slag corrosion resistance.

Description

technical field [0001] The invention relates to a refractory material for industrial kiln equipment, in particular to a fired aluminum-carbon brick and a manufacturing method thereof. Background technique [0002] The mixed iron car usually carries out single desulfurization treatment on the molten iron while transporting the molten iron, and the refractory material of the inner working layer is made of aluminum-silicon carbide-carbon unfired brick (Al 2 o 3 -SiC-C). In recent years, a new process of "three removals" molten iron pretreatment has been implemented in the mixed iron car. "Three removals" refers to desulfurization, dephosphorization, and desiliconization. The "three removals" of molten iron is a pure steel production process with high production efficiency. Lime and other raw materials The consumption of auxiliary materials is small, the process temperature drop is small, and the production cycle is short, so that the production cost is significantly lower tha...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/66C21C1/06
Inventor 宋飞孙立鲍戟励军罗明
Owner BAOSHAN IRON & STEEL CO LTD