A kind of cement produced by utilizing industrial solid waste and its preparation method

Abstract

The invention provides cement produced by utilizing industrial solid wastes. The cement is prepared from the following raw materials: 77.00-82.50% of clinker, 0.30-7.90% of blaster furnace slag, 1.60-5.55% of desulfurization gypsum, 2.90-7.60% of waste rocks, 0-1.00% of high-silicon sandstone, 0.70-6.70% of fly ash, 0-12.00% of high magnesium waste rock, 0-2.40% of phosphogypsum and 0-0.80% of titanium gypsum, wherein the clinker is prepared from the following raw materials: common limestone, marble sawdust, marble leftover material, high magnesium waste rock, sandstone, red clay and wet-discharged fly-ash. According to the cement, the cement raw material is prepared by using the marble sawdust and leftover material, the waste residue utilization rate is high, and lots of natural resources and energy can be saved. Meanwhile, the high magnesium waste rock is used for preparing the raw material and serves as a mixed material of the cement to be simultaneously used, and the utilization rate of the high magnesium waste rock is greatly improved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to cement produced by utilizing industrial solid waste and a preparation method thereof. Background technique [0002] Cement is widely used in industrial and civil construction. Traditional cement clinker is calcined with natural mineral resources and energy such as limestone, clay, silica sand, iron ore, gypsum, fluorite, coal, etc., which wastes a lot of natural resources and energy. At present, the cement produced by industrial waste residue can reduce the production cost of cement. Industrial waste residues such as fly ash are widely used in the cement field as mixed materials, but in recent years, industrial waste residues such as fly ash have been in short supply and cannot meet the demand. [0003] With the rapid development of my country's economy and construction, the investment in infrastructure construction continues to increase, and the stone processing and cement co...

AI Technical Summary

Problems solved by technology

In particular, marble stone processing produces a large amount of sawdust and leftovers, but none of them can be disposed of in a timely and effective manner, resulting in random burial and piles, which have seriously affected the ecological protection of Hezhou City, and some enterprises have been forced to suspend production for rectification

At the same time, cement mines are excavated to produce cement, and a large amount of high-magnesium waste rock occupies land resources, which not only wastes resources, but also causes certain pressure on the environment

The invention with the application number 201210470288.X discloses a preparation of Portland cement clinker by using marble stone powder and its preparation method. Marble waste and high-silicon iron tailings are used as admixtures to prepare cement, which saves energy, but the use of waste residue Relatively simple, and the strength of the prepared cement is low, which needs to be improved

The invention patent with application number 201510274585.0 discloses a high-magnesium waste rock powder-based composite mineral admixture and its application in high-strength concrete. The high-magnesium waste rock is ground to obtain a high-magnesium waste rock powder-based composite mineral as a concrete admixture. It provides a way to utilize high-magnesium waste rock, but the doping amount is low and the utilization rate is not high

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