阅读说明：本技术 一种抗侵蚀的铝酸钙浇注料 (Erosion-resistant calcium aluminate castable ) 是由 白宏宇 王国林 白中栓 于 2020-12-24 设计创作，主要内容包括：一种抗侵蚀的铝酸钙浇注料,所述的铝酸钙浇注料的各组分的重量百分比为：铝酸钙骨料和细粉的混合物：65-69.9％,氧化铝空心球占比为10-13％,纯铝酸盐水泥占比为2-10％,氧化铝微粉占比为5-11％,添加剂为0.5-3％,高效分散剂为0.1％；以上各组分的组配重量之和为100％；本发明的铝酸钙浇注料不仅施工速度快,体积密度也低,抗钢渣和钢水的侵蚀能力也强,起到了节能减排,保安全等方面的作用。(The corrosion-resistant calcium aluminate castable comprises the following components in percentage by weight: mixture of calcium aluminate aggregate and fines: 65-69.9 percent of alumina hollow sphere, 10-13 percent of pure aluminate cement, 5-11 percent of alumina micro powder, 0.5-3 percent of additive and 0.1 percent of high-efficiency dispersant; the sum of the weight of the components is 100 percent; the calcium aluminate castable provided by the invention is high in construction speed, low in volume density and strong in steel slag and molten steel erosion resistance, and plays roles in energy conservation, emission reduction, security and the like.)

1. An erosion-resistant calcium aluminate castable, characterized by: the calcium aluminate castable comprises the following components in percentage by weight: mixture of calcium aluminate aggregate and fines: 65-69.9 percent of alumina hollow sphere, 10-13 percent of pure aluminate cement, 5-11 percent of alumina micro powder, 0.5-3 percent of additive and 0.1 percent of high-efficiency dispersant; the sum of the weight of the components is 100 percent.

Technical Field

The invention relates to a permanent lining of a ladle and a permanent lining of a ladle, in particular to an anti-erosion calcium aluminate castable.

Background

For a long time, no matter the permanent lining of the steel ladle or the permanent lining of the ladle adopts high-alumina, aluminum-magnesium castable or high-alumina bricks, the castable has high volume density, so that the weight of the steel ladle and the ladle is increased greatly, the running load of a crown block is increased, and meanwhile, the heat conductivity coefficient of the material is increased due to the high density, so that the temperature of molten steel and molten iron is reduced quickly, the temperature is particularly unfavorable for heat preservation and energy conservation, the heat consumption of a steel mill is increased, a large amount of heat is wasted and consumed, and even the temperature is reduced seriously, a series of accidents such as difficult steel tapping and the like can be caused. If the permanent lining is built by the high-alumina bricks, the permanent lining cannot be integrated due to the brick joints, once the working lining is punctured by the steel slag, the permanent lining is easy to cause a bag-penetrating accident due to the brick joints, and huge loss is caused to a steel plant.

For the above reasons, a corrosion-resistant calcium aluminate castable material has been developed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides an anti-corrosion calcium aluminate castable which is high in construction speed, low in volume density and strong in steel slag and molten steel corrosion resistance, and plays roles in energy conservation, emission reduction, security and the like.

In order to achieve the purpose, the invention adopts the following technical scheme: the corrosion-resistant calcium aluminate castable comprises the following components in percentage by weight: mixture of calcium aluminate aggregate and fines: 65-69.9 percent of alumina hollow sphere, 10-13 percent of pure aluminate cement, 5-11 percent of alumina micro powder, 0.5-3 percent of additive and 0.1 percent of high-efficiency dispersant; the sum of the weight of the components is 100 percent.

The invention has the beneficial effects that: the calcium aluminate aggregate contains 85 percent of aluminum oxide, 10 percent of calcium oxide and 2.80g/cm of bulk density³The apparent porosity is 25%, the content of aluminum and calcium is good, the slag corrosion resistance is strong, the volume density is small, the porosity is high, the specific gravity of the material is very light, the number of air holes in the material is large, the heat insulation performance is good, the volume density of the alumina hollow spheres is 0.7g/cm, the added aluminate cement can play a role in increasing the strength, the scouring resistance and the impact resistance of the material are improved, the overall fluidity of the material is excellent due to the fact that the alumina micro powder is very fine, and the additive can enable the material to slightly expand when the material receives high temperature again, so that the integrity of the material is favorably ensured; the calcium aluminate castable provided by the invention is high in construction speed, low in volume density and strong in steel slag and molten steel erosion resistance, and plays roles in energy conservation, emission reduction, security and the like.

Detailed Description

The present invention will be described in further detail with reference to the following examples and embodiments:

example 1

The calcium aluminate castable comprises the following components in percentage by weight: mixture of calcium aluminate aggregate and fines: 65-69.9 percent of alumina hollow sphere, 10-13 percent of pure aluminate cement, 5-11 percent of alumina micro powder, 0.5-3 percent of additive and 0.1 percent of high-efficiency dispersant; the sum of the weight of the components is 100 percent.