SU1548166A1 - Method of producing a binder - Google Patents

Abstract

The invention relates to a method for preparing a mortar and can be used in the building materials industry for the preparation of low-quality mortars and concretes. The purpose of the invention is to increase the setting time and compressive strength. The method of preparing a breeder involves displacing the ash of brown coal and the alumina-containing component, followed by mixing with water. At the same time, the spent sulfur catalyst is used as the alumina-containing component, and the mixing with water is carried out with dialysis water with a pH of 10-12 in the following ratio of components (calculated on the dry matter), wt.%: Brown coal ash 65-75

spent catalyst 25-35. Compressive strength of samples at 28 days 17.2-19.8 MPa, bending 1.53-1.72 MPa. The beginning of the setting time is 6-13 minutes, the end is 1.4-1.5 hours. 1 table.

Description

The invention relates to a method for the preparation of concrete and can be used in the building materials industry for the production of low-quality mortars and concretes.

The purpose of the invention is to increase the setting time and compressive strength.

In the implementation of the technical solution, the high-calcium fly ash of the CHP plant from the combustion of brown coal and the spent sulfur production catalyst are mixed to evenly distribute the components (previously ground to a residue on a 008 sieve, 15%). The mixing is carried out with dialysis water treated on an electrodialyzer to a pH of 10-12, at a w / t ratio

0.15. The laboratory electrodialyzer is a plastic container divided into three chambers with anionic and cation-conducting membranes. The water in the three chambers is treated with a constant electric current for. 30 minutes to obtain in the extreme cells a pH of 2.3-3 and 10-12, respectively.

As raw materials, fly ash from CHP from incineration is used.

brown coal. These ashes are high calcium and are characterized by the following material and phase composition: basicity ratio 1.0-1.6; glass wool phase up to 50%, CaO2 36–42%, CaO 6 up to 10%, S03 1.0–4.0%, Alg04 / 303 ratio 2.5–7.7.

cl

Ј OR

05 ОЪ

Spent sulfur production catalyst - activated alumina СР-5/10. The chemical composition of the spent catalyst, wt.%: AltOs 99,8} Reg05 0,05; NaaO 0.06; ppt 0.09.

The compositions in the road and the results of physical and mechanical tests are given.

The proposed gnaw possesses higher physicomechanical properties and elongated setting times. The use of a tamper will solve the problem of disposing of the spent catalyst for the production of sulfur, which is currently exported to the dump.

Claims (1)

Claims The method of preparation of a brown coal and an alumina-containing component, followed by water, in the presence of mixing ash, is characterized in that, in order to increase the setting time and compressive strength, the spent sulfur production catalyst is used as an alumina-containing component, and carried out with dialysis water with a pH of 10-12 in the following ratio of components (in terms of dry matter), wt.%: Brown coal ash 65-75 Spent catalyst 25-35 65 35 Editor N. Gunko Compiled by P. Skins kin Tehred M.Didyk Proofreader A.Obruchar Order 111 Circulation 568 The State Committee for Inventions and Discoveries under the State Committee on Science and Technology of the USSR was entered in 113035, Moscow, Zh-35, 4/5 Raushsk nab. ,four Not observed 18.4 1.60 Mixing with alkaline water with a pH of 10-12 Subscription