Coal ash casting coating

Abstract

The invention provides a coal ash casting coating. The coal ash casting coating takes 50% of coal ash, 30% of high-aluminum bauxite, 8% of red mud, 8% of steel plant bag dust and 4% of water granulated slag as fire-resistant powder, takes 3% of organic bentonite, 0.4%-0.5% of CMC, 1.5%-3.5% of phenol-formaldehyde resin, 0.5% of PVB and 0.1% of a defoaming agent as additives, takes 5%-10% of slaked lime, 5%-20% of aluminum ash, cellulose and a thickening agent as binding agents, and takes water as a carrier liquid. The adhesion property of the coating is improved by the use of the binding agents; red mud, steel plant bag dust, high-aluminum coal gangue powder and water granulated slag are recycled as fire-resistant materials for production, so that the production cost and the dust pollution are reduced, and the environment protection is facilitated to a certain extent; and the coating saves resources and is an effective technical measure for increasing the economic benefits of cast products.

Description

technical field [0001] The invention relates to a coating, in particular to a fly ash casting coating. Background technique [0002] Foundry coating is a kind of refractory coating used in casting production. The casting coating particles are relatively coarse, but it has good thermal insulation performance, which can prevent castings from lack of meat and cold shut during casting. It is suitable for thin and thin section castings and large flat castings, and is also suitable for For feeding port, wheel hub, piston, connecting rod, cylinder, etc., casting coatings are generally mainly composed of refractory powder, additives and carrier liquid. Refractory materials are stepless mineral materials resistant to high temperature, but these coatings in the traditional sense have bonding Performance is not a strong problem, and now more and more people pay attention to the recycling of resources. Red mud, high-aluminum coal gangue powder, bag ash from steel plants and water slag a...

AI Technical Summary

Problems solved by technology

[0002] Foundry coating is a kind of refractory coating used in casting production. The casting coating particles are relatively coarse, but it has good thermal insulation performance, which can prevent castings from lack of meat and cold shut during casting. It is suitable for thin and thin section castings and large flat castings, and is also suitable for For feeding port, wheel hub, piston, connecting rod, cylinder, etc., casting coatings are generally mainly composed of refractory powder, additives and carrier liquid. Refractory materials are stepless mineral materials resistant to high temperature, but these coatings in the traditional sense have bonding Performance is not a strong problem, and now more and more people pay attention to the recycling of resources. Red mud, high-aluminum coal gangue powder, bag ash from steel plants and water slag are all high-temperature-resistant stepless mineral materials, but nowadays They have not been reasonably utilized as refractory materials in production technology