A kind of calcium carbide slag cement

Abstract

The invention discloses calcium carbide slag cement. The cement is composed of following raw materials in parts by weight: 30 to 35 parts of limestone, 40 to 65 parts of calcium carbide slag, 0.5 to 5.5 parts of ferruginous raw material, 5 to 10 parts of clay, 5 to 25 parts of fly ash, 0.5 to 1.5 parts of cement reinforcing agent, 0.3 to 0.9 part of anti-freezing agent, 5 to 8 parts of gypsum, 1 to 5 parts of short glass fiber and 1 to 2 parts of modifier. The blending amount of calcium carbide slag is largely increased during the cement preparation process, the mineral resource is saved, the cement production cost is reduced and the discharge of pollutant is reduced. The cement reinforcing agent is added, so the compressive strength of the cement is improved, and the mixed materials are fully utilized. The anti-freezing agent is added, so the anti-freezing performance of the cement is improved, and the cement can satisfy the needs of construction in most areas in winter.

Description

technical field [0001] The invention relates to carbide slag cement, which belongs to the field of cement. Background technique [0002] Cement is one of the important building materials today. It is made of silicate clinker made by mixing limestone, coal, iron powder and clay and other mineral raw materials, and then adding gypsum to the clinker and grinding it. . With the rapid development of my country's economy, the demand for cement has doubled. According to incomplete statistics, the national cement output reached 2.18 billion tons in 2012. At the same time, the research on special cement is also increasing. Chinese patent 200710137472.1 discloses a cement enhancer, which makes full use of industrial waste gas mixture materials, reduces cement costs, saves mineral energy, and improves the ecological environment. Chinese patent 200710055161.0 discloses an antifreeze cement, by adding cement antifreeze components, the cement antifreeze effect is uniform and the antif...

AI Technical Summary

Problems solved by technology

At present, there are mainly the following problems in cement production: (1) Limestone is mainly used as the main raw material, which is costly and will cause waste of resources and environmental pollution. Although some enterprises use industrial waste such as calcium carbide slag to produce cement clinker, the mixing is low. , high energy consumption; (2) The degree of antifreeze of cement is low, which can only meet the winter construction needs in some areas

Images