CN105314900A

CN105314900A - Cement raw material

Info

Publication number: CN105314900A
Application number: CN201410261166.9A
Authority: CN
Inventors: 刘振河; 冯延童; 刘素峰; 刘瑞奇
Original assignee: DENGFENG ZHONGLIAN DENGDIAN CEMENT Co Ltd
Current assignee: DENGFENG ZHONGLIAN DENGDIAN CEMENT Co Ltd
Priority date: 2014-06-13
Filing date: 2014-06-13
Publication date: 2016-02-10

Abstract

A cement raw material belongs to the field of building materials and includes limestone, waste slag from mining and mineral processing, sand stone, pyrite slag and coal gangue. The coal gangue is fully utilized and meanwhile dependency on fly ash is reduced. The cement raw material can increase the inlet temperature of a waste gas powder generating station and also reduces environment pollution due to the coal gangue on the basis of ensuring the performances of cement.

Description

A kind of cement slurry

Affiliated field

The invention belongs to building material field, particularly a kind of cement slurry.

Background technology

Cement slurry is the starting material producing cement, in process of production, cement slurry is selected, pulverizes, mixing, and form cement clinker after calcining, cement clinker, according to different purposes, adds different additives, just defines the cement products of different size purposes; Existing cement slurry is substantially by Wingdale, mining and mill run waste residue, sandstone, pyrite slag, flyash forms, due to the byproduct that flyash is thermal power generation, its quantity is subject to the quantitative limitation that generates electricity, simultaneously, because flyash is through burning, substantially there is not remaining calorific value, have surplus heat in cement production process power house time, cogeneration station temperature in can be caused low.

Summary of the invention

For the above defect existed in existing cement slurry proportioning, the present invention proposes a kind of cement slurry, it is characterized in that: comprise Wingdale, mining and mill run waste residue, sandstone, pyrite slag, coal gangue; The mixing ratio of its each component is: Wingdale 55-60%, mining and mill run waste residue 25-30%, sandstone 7-8%, pyrite slag 4-5%, coal gangue 2-4%; Said components is pulverized selected rear mixing and just form cement slurry, through calcining, just produce cement clinker.

Beneficial effect

Make full use of Coal Gangue Resource, reduce the dependence to flyash, under the prerequisite ensureing cement performance, improve the temperature at cogeneration station, decrease the pollution of coal gangue to environment.

Embodiment

Due to the anxiety of fly ash, regular flyash supply is caused not go up, and coal gangue belongs to the byproduct of coal production, a large amount of places is needed to deposit, and according to the chemical composition of coal gangue and the main component of flyash close, and also have thermal value, to the cement production enterprise in the power house that has surplus heat, the generated energy at cogeneration station can be improved, during practical application, through repetition test, according to Wingdale 56.8%, mining and mill run waste residue 28.4%, sandstone 7.9%, pyrite slag 4.3%, coal gangue 2.6% is optimizing mixing proporiton example; Select the parameter of coal gangue: LOSS13.75, CaO6.19, SiO ₂55.61, Fe ₂o ₃2.77, Al ₂o ₃16.06, MgO0.72, SO ₃0.66, volatile matter: 7.02, thermal value: 800kcal/kg, pulverizes various component, after calcining, just produces cement clinker, proves through test, and through strict proportioning, while guarantee cement clinker properties, Waste Heat Power Station temperature in can improve 15 ⁰about C, cement clinker generated energy per ton brings up to 32 degree by 30 degree, decreases the dependence to fly ash, improves generated energy, creates good economic benefit.

Claims

1. a cement slurry, is characterized in that: comprise Wingdale, mining and mill run waste residue, sandstone, pyrite slag, coal gangue; The mixing ratio of its each component is: Wingdale 55-60%, mining and mill run waste residue 25-30%, sandstone 7-8%, pyrite slag 4-5%, coal gangue 2-4%.

2. a kind of cement slurry according to claim 1, is characterized in that: the proportioning of each component is: Wingdale 56.8%, mining and mill run waste residue 28.4%, sandstone 7.9%, pyrite slag 4.3%, coal gangue 2.6%.

3. a kind of cement slurry according to claim 1, is characterized in that: the parameter selecting coal gangue: LOSS:13.75, CaO:6.19, SiO ₂: 55.61, Fe ₂o ₃: 2.77, Al ₂o ₃: 16.06, MgO:0.72, SO ₃: 0.66, volatile matter: 7.02, thermal value: 800kcal/kg.