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Sulfur and phosphor removing stoking material for cupola furnaces

A cupola and sulfur-phosphorus technology, which is applied in the field of formulation and preparation of pounding materials, can solve the problem of no improvement of the impurity remover.

Active Publication Date: 2015-02-25
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

It mainly enhances the chemical reaction by increasing the contact between the molten iron and the impurity removal agent in the supertropical zone and the hearth zone, so as to achieve enhanced impurity removal and improve the efficiency of impurity removal; there is no improvement in the formulation of the impurity remover

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0020] 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

[0028] 50 parts M 2 S powder, other are identical with embodiment 1.

Embodiment 4

[0030] 70 parts M 2 S powder, other are identical with embodiment 1.

[0031] From the comparison of Examples 1 and 2, it can be seen that the particle size of each powder component is less than 100um, which can effectively improve the efficiency of desulfurization and dephosphorization.

[0032] Through the comparison of Example 1 and Comparative Examples 1-3, it can be seen that the joint use of magnesia powder and bentonite has achieved a synergistic effect. Visible by the comparison of embodiment 1 and 3-4, M 2 The effect is best when the ratio of S powder and magnesia powder is 2:1.

[0033] Table 1 Embodiments of the present invention

[0034] .

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PUM

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Abstract

The invention provides a sulfur and phosphor removing stoking material for cupola furnaces and a preparation method of the material. The stoking material comprises the components in parts by weight: 30-90 parts of M2S powder, 30-50 parts of magnesia powder, 10-30 parts of fireproof cement, 10-30 parts of tourmaline powder, 10-30 parts of calcium carbonate powder, 20-40 parts of iron oxide powder and 2-5 parts of bentonite powder.

Description

technical field [0001] The invention relates to a cupola ramming material used in the foundry industry, in particular to a formula and a preparation method of a novel ramming material for sulfur and phosphorus removal. Background technique [0002] The cupola (iron melting furnace) is one of the most basic smelting equipment for smelting molten iron in foundry production. During the operation of the cupola, it emits a large amount of coke dust, sulfur dioxide, nitrogen oxides, carbon monoxide and metal oxide dust particles. The surrounding environment is seriously polluted. The traditional furnace lining and ramming materials use quartz sand acidic materials, which are not strong in removing harmful sulfur and phosphorus elements from molten iron. Sulfur seriously hinders graphitization. When the sulfur content is high, cast iron tends to form white spots. Sulfur forms eutectic FeS+Fe with a low melting point on the grain boundaries of cast iron, making cast iron hot brittl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/064C21C7/00
Inventor 陈志芳
Owner 新疆世全黄金矿业股份有限公司