Pollution-free environment-friendly casting molding sand and preparation method thereof

Abstract

The invention discloses pollution-free environment-friendly casting molding sand and a preparation method thereof. The pollution-free environment-friendly casting molding sand comprises, by weight, 30%-70% of SiO2, 6%-45% of MgO, 1.5%-15% of Al2O3, 0.3%-10% of CaO, 0.2%-8% of Fe2O3, 15%-30% of K2O, 2%-10% of Na2O, 0.5%-3% of Sb2O30, 1%-3% of TiO2 and 0.3%-0.5% of P2O5. The environment-friendly foundry molding sand developed and produced from the demands which meet the national industrial policies such as environment protection, cost advantages and improvement of the production efficiency and the finished product rat.

Description

technical field [0001] The invention relates to the field of casting, in particular to a pollution-free and environment-friendly casting sand and a preparation method thereof. Background technique [0002] Casting is one of the basic crafts of modern machinery manufacturing industry. Therefore, the development of foundry industry marks the production strength of a country. my country is the largest casting production country in the world today, and the casting industry occupies a pivotal position in the national economy. After the reform and opening up, my country's foundry industry has made great achievements. The output of castings has ranked first in the world for 11 consecutive years. The foundry industry can be mainly divided into sand casting, special casting, etc., among which sand casting accounts for 80% of the foundry industry. The main raw material cost of sand casting is the casting molding material, which accounts for more than 70% of the total production cost...

AI Technical Summary

Problems solved by technology

[0003] However, my country's foundry industry generally has high labor intensity, high energy consumption, high resource consumption, and high environmental pollution. The incompatibility with the new economic normal that requires both economic development and protection of the ecological environment has become a crisis for the development of the industry

The second is that the workers' work is dirty and poor, which leads to the fault of industrial technicians and the serious loss of industrial workers, which has also become a crisis for the development of the industry.

However, these materials are difficult to form a large-scale practical application due to the cost, the lack of raw material sources, or other environmental pollution problems.

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