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Molten steel and molten iron slag accretion heat insulation covering agent with sulphur and phosphorous removal function

A thermal insulation covering agent and a covering agent technology, applied in the covering agent field, can solve problems such as limiting the scope of application

Active Publication Date: 2014-01-29
新疆世全黄金矿业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a small amount of carbon (carbon-containing substances) is added, which limits its application range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0035]The particle diameters of the above-mentioned powdery components are all below 100um, and other conditions are the same as in Example 1.

Embodiment 3

[0039] 15 servings of M 2 S powder, other conditions are identical with embodiment 1.

Embodiment 4

[0041] 15 parts of magnesia powder, other conditions are identical with embodiment 1.

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PUM

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Abstract

The invention provides a molten steel and molten iron slag accretion heat insulation covering agent with a sulphur and phosphorous removal function and a preparation method thereof. The covering agent comprises the following components of, by weight, 10 parts to 20 parts of forsterite powder, 5 parts to 15 parts of magnesia powder, 10 parts to 20 parts of hollow glass bead powder, 10 parts to 20 parts of crushed crude pearlite, 5 parts to 15 parts of zeolite powder and 5 parts to 15 parts of palygorskite powder. By the combined action of the raw materials, the optimum sulphur and phosphorous removal function can be achieved. During covering of steel ladles and molten steel and molten iron in tundishes of steel works, good heat insulation and inclusion absorption of the molten steel and molten iron can be achieved, recarburization of the molten steel is prevented, and sulphur and phosphorous elements in the molten steel and molten iron are absorbed particularly.

Description

technical field [0001] The invention relates to a covering agent for accumulating slag and heat preservation of steel and molten iron in the foundry industry, in particular to a novel slag accumulating heat preservation covering agent with the function of removing sulfur and phosphorus and a preparation method thereof. Background technique [0002] In foundry production, in order to prolong the solidification time of the molten metal in the riser, the covering material covered on the surface of the molten metal in the riser is called a covering agent. There are two kinds of covering agents: thermal insulation covering agent and heating covering agent. [0003] CN102554141A discloses a heating covering agent for steel castings, wherein the weight percentage of each component is: heating agent 5-25%, heat preservation agent 10-20%, triggering agent 3-8%, wood chips 1%, the rest Both are slag accumulators, in which the exothermic agent is aluminum powder, aluminum ash, and Al ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D1/00B22D11/111
Inventor 陈志芳
Owner 新疆世全黄金矿业股份有限公司
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