SU796206A1 - Raw mixture for producing portlandcement clinker - Google Patents

Description

The invention relates to the production of living materials, namely the composition of the raw materials for the production of cement clinker and can be used in the cement industry. Known raw materials for the production of cement clinker, including limestone, clay components and additives 1. Closest to the proposed technical essence is the raw mix 2, containing the following components, wt.%: 60-80 Limestone 17-19 Clay 2.0-3.0 Cinder 0.05-5.0 Boric anhydride 0.35 -10, Barium oxide 0.6-3.0 Manganese oxide The disadvantages of the known raw material mixture are low firing temperatures, the duration of the grinding time of the clinker, and low cement activity. The purpose of the invention is to reduce the firing temperature, intensify the process of grinding clinker and increase the activity of cement. The goal is achieved by the fact that the raw mix for obtaining Portland cement clinker, including limestone, clay, barium-containing and manganese-containing components, contains manganese ore as the manganese-containing component, in the following ratio, wt.%: 83.0 Clay 9.0-12.0 Barium-containing 1.0-3.0 Manganese-containing 7.0-10.0 The active silica contained in manganese wastes accelerates the formation of silicates and increases the silicate module, Increasing the silicate module does not cause sintering of the clinker. In addition, the enrichment tailings of manganese ores are a corrective and at the same time a raw material component. In order to obtain portland cement clinker, known and proposed raw mixtures are prepared from which samples are preformed. The samples obtained are calcined in an oven at 1430 and 1350 ° C. Degree of completion of the reaction

set the content of free lime in the specs. The clinkers obtained by roasting at these temperatures are ground with the addition of 5% gypsum and from a test of normal thickness.

Cube samples of 2x2x2 cm are prepared and tested for strength.

The table shows the composition of the raw mixes, firing temperature, strength and time of grinding of clinker.

The Present of Preferred Prospect 7, 0% of the tailings of the enrichment of manganese ore in terms of manganese oxide is 1.1% 1.0% of barium-containing waste in terms of barium oxide is 0.4%.

The data presented show that the proposed raw mix has a significant advantage. This is particularly evident in the reduction of the firing temperature by 80 ° C.

Use of the invention is allowed. It is possible to obtain increased activity clinker, to intensify the grinding process with a significant reduction in fuel and energy costs.

 Continued table.

Claims (2)

Claims Raw materials mixture for obtaining Portland cement clinker, including limestone, clay, barium-containing and manganese-containing components, characterized in that, in order to reduce the firing temperature, to intensify the process of grinding the clinker and to increase the activity of cement, 4 g. Contents5. 7962066 lives as a manganese-containing source of information, a component of manganese enrichment tailings taken into account by expert examination with the price of ore at the following ratio of components, wt.%: 1. Authors certificate of the USSR The limestone is 75.0-83.0 501047, cl, C 04 B 7/35, 1974. Clay 9.0-12.05 2. USSR author's certificate Barium-containing 1.0-3.0№ 532587,1kl. From 04 To 7/42, 1975, Manganese-containing 7.0-10.0 (prototype).