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Deslagging agent used for smelting cast iron and preparation method thereof

A cast iron and slag agent technology, applied in the field of cast iron casting, can solve the problems of micro-cracks and slag inclusions, and achieve the effects of preventing oxidation, strong slag accumulation ability and saving production costs.

Inactive Publication Date: 2020-01-10
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current production process will lead to casting defects such as slag inclusions, pores, micro-cracks, etc.

Method used

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  • Deslagging agent used for smelting cast iron and preparation method thereof

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Effect test

Embodiment 1

[0026] A slag remover for cast iron smelting, comprising the following raw materials in weight percentage: 72.2% of silicon dioxide, 15.9% of aluminum oxide, 0.62% of iron oxide, 1.29% of sodium oxide, 3.84% of potassium oxide, 1.31% of calcium oxide, Magnesium 0.54%, the balance is iron and unavoidable impurities.

[0027] The preparation method is as follows: mixing the raw materials in the formula amount, baking at 150°C-160°C for 2-4 hours, and grinding to obtain the slag remover for cast iron smelting.

Embodiment 2

[0029] A slag remover for cast iron smelting, comprising the following raw materials in weight percentage: 75.2% of silicon dioxide, 12.3% of aluminum oxide, 1.24% of iron oxide, 2.48% of sodium oxide, 2.37% of potassium oxide, 1.17% of calcium oxide, Magnesium 0.47%, the balance is iron and unavoidable impurities.

[0030] The preparation method is as follows: mixing the raw materials in the formula amount, baking at 150°C-160°C for 2-4 hours, and grinding to obtain the slag remover for cast iron smelting.

[0031] The performance of the slag remover for cast iron smelting prepared by each embodiment is shown in table 1:

[0032] Table 1

[0033]

[0034] The slag remover for cast iron smelting prepared in the above embodiments is used in iron and steel smelting to solve the problems of pitting corrosion, white spots, fly feet and the like that often occur in cast iron processing.

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Abstract

The invention discloses a deslagging agent used for smelting cast iron and a preparation method thereof. The deslagging agent comprises, by weight, 70%-75.2% of silicon dioxide, 12.1%-15.9% of aluminum oxide, 0.5%-1.9% of ferric oxide, 1.2%-3.22% of sodium oxide, 1.9%-3.84% of potassium oxide, 0.9%-1.48% of calcium oxide, 0.47%-1.46% of magnesium oxide, and the balance iron and inevitable impurities. The deslagging agent used for smelting the cast iron mainly comprises SiO2 and Al2O3 and can instantly expand when sharply heated to the temperature of 1100DEG C or over so as to form a viscous active material of a porous structure, so that molten iron, slag in the molten iron, and impurities can adhere together to be gathered; the deslagging agent has a low heat conductivity coefficient so that heat conduction and thermal radiation on the surface of the molten iron can be effectively reduced, and a heat preservation effect is achieved; and the problems, such as corrosive pits, white spotsand wrinkles, which occur frequently during cast iron machining are solved while the defects are overcome.

Description

technical field [0001] The invention belongs to the field of cast iron casting, and in particular relates to a slag remover for smelting cast iron and a preparation method thereof. Background technique [0002] Cast iron is widely used. At present, the production process of cast iron is to add a certain amount of nodulizer and inoculant to molten iron with a certain composition, and make graphite into spherical or flake shape through the action of nodulizer or inoculant in molten iron. The matrix structure of cast iron is related to many factors, in addition to the influence of chemical composition, it is also related to the treatment of molten iron, the solidification conditions of molten iron and heat treatment. However, the current production process will lead to casting defects such as slag inclusions, pores, and microcracks. Contents of the invention [0003] The invention provides a slag remover for cast iron smelting and a preparation method thereof. While avoiding...

Claims

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Application Information

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IPC IPC(8): B22D1/00C21C1/08C22C33/08
CPCB22D1/00C21C1/08C22C33/08
Inventor 柴知章张振猛张椿英赵浩峰
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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