SU1052487A1 - Method for producing cement clinker - Google Patents

Abstract

A METHOD FOR OBTAINING A CEMENT CLINKER by preparing a granulated fuel-containing raw mixture with calcium chloride followed by heat treatment on a conveyor grid, I distinguish, because, with the aim of obtaining, according to the content of residual chlorine ion and free oxide, calcium clike, free calcium oxide and calcium oxide free calcium hydrochloride will be used, and it should be used. at the grate of the conveyor lattice, granulated material with calcium chloride content of 0.5–2.0% by weight is poured at 1030% of the final height of the layer, and granulated material with calcium chloride content is poured onto it Q q 3-5 wt.% . S (L with:

Description

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The invention relates to the production of building materials, in particular, low-temperature salt technology for cement production. A known method for producing cement clinker includes grinding raw components, mixing them with solid fuels, introducing calcium chloride, granulating the mixture and agglomerating with burning material above the surface. gas, calcium chloride is introduced into the mixture in the process of granulation, and the agglomeration is carried out at a temperature above the layer of 900-1100 s with sucking 1-: 30% of the raw Flour together with after desalting with gases, through a layer of granules in the drying and heating zones G1 J

The disadvantage of this method is that it is uniform in content. Chloris: Togo calcium in the material formation. This leads to the emergence of a significant concentration gradient of CCE2 over the layer height as a result of intensive sublimation of lower hydrogen from the upper layers of the calcined mixture and filtration of the resulting hydrogen chloride, as well as the formation of an increased amount of the liquid phase in the lower layer of the layer. welds, - violation of the gas permeability of the layer and the heat treatment process as a whole, obtaining low quality clinkers. .

The closest technical solution to the proposed method is to obtain cement clinker by preparing a granulated fuel-containing raw mixture with calcium chloride followed by heat treatment on a conveyor grid of 2 J. In this method, the sintering belt has two lines. Granulated charge with 10–12% CaCb and with coal is loaded onto the upper rus; granulated charge is fed to the lower rus; charge without CACY without coal is fed to the lower rus. Hydrogen chloride, exchanged during the heat treatment of the material of the upper tier, is utilized by the material of the lower layer. The unloading of the Rus is done separately.

However, in this method, the formation of a layer of material in the upper russa of the sintering belt with a CaCy concentration gradient along the height of the layer that is uniform in terms of CaSR content in the raw material is preserved.

The purpose of the invention is to obtain a conditional content of residual chlorine ion and free calcium oxide clinker,

The goal is achieved by the fact that, according to the method for producing cement clinker, granulated fuel-containing raw mixture with calcium chloride was prepared by subsequent heat treatment on a conveyor grid, granulated material with calcium chloride content of 0.5-2.0 was poured onto the grate of the conveyor grid for 1030% of the final height of the layer. May.% and granulated material containing Calcium Chloride 3-5% by weight is poured onto it. .

. Prepare eight raw mixtures containing calcium chloride O / 0.5; ±; 2 / .З; four; 5i b% (on the dry mass of the Mixture J and coal in the quantity of 401 o.t. of the total amount of fuel required for roasting. The mixture is granulated with a plate granulator and is burned on an experimental sintering plant with burning, above the layer, of natural material gas in the amount of 60%. of the total amount of fuel required for firing, the temperature of the mountain gaeov. CONDUCT .three series of roasting-, gov with varying in each series one of the three parameters (the content of calcium chloride in the upper and lower parts layer relative height of the bottom with At the end of the firing, the Clinker layer is divided in height into three parts, in which the content of the chlorine ion and .Gad, is determined. The firing results are given in IHEJ in the table

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710524878

The results of analyzes of the bottom layer of clinker - 1% with relative

for the content of chlorine ion and CaOf, while the height of the upper and lower layers is called, it is 80% and 20% that are optimal for this.

firing mode is sleducadi; Thus, the proposed grating on the grate: this can reduce the

Calcium chloride retention in residual chlorine ion and CaO in the wedge of the upper layer of 4%, in the material.

Claims (1)

METHOD FOR PRODUCING A CEMENT CLINKER by preparing a granular fuel-containing raw material mixture with calcium chloride j, followed by heat treatment on a conveyor belt, which is ensured by the fact that. in order to obtain conditional content ^: · residual chlorine ion and free calcium oxide of clinker, granular material with calcium chloride content of 0.5-2.0 wt.% is added to 1030% of the final layer height on the grate of the conveyor grate and granular material with a content of calcium chloride of 3-5 wt.% is poured. . ,. _m SU 1052487> mixtures and agglomeration of the surface of the layer, the input of chloride is carried out in