RU1812169C - Method for production of claydite - Google Patents

Abstract

The inventive method. expanded clay production, including the formation of granules or the preparation of clay crushed stone, coating them with a dusting additive with an organo-alkaline and carbonate-alkaline component and subsequent firing, granules or crushed stone are covered with a mixture of loess-like loam, in an amount of 2-5% by weight of granules or crushed stone, and a technical lignosulfonate solution , or bottoms liquid, or concentrated aqueous runoff, taken in. amount of 1-5 from masgGranul or crushed stone. Characteristics of expanded clay: bulk density 250-500. ct / m3, water absorption 7-15%, firing temperature 1050-1100 ° C. 1 tab.

Description

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The invention relates to the field of production of building materials and can be used for the manufacture of expanded clay.

The purpose of the invention 1 is to simplify the method, to reduce the firing temperature and water absorption.

The following types of additives were used as the organo-alkaline and carbon-alkali components: waste from the pulp and paper industry — fexHwecKHe LST lignosulfonates produced according to OST 13183-83, SVK — stable code concentrate (according to TU 113-03-23-22-86) - Waste production of caprolactam PO Elektrokhimprom 11, Chirchik UzSSR; QOL

- bottoms liquid - waste during e-traction upon receipt of purified Na CMC (sodium carboxymethyl cellulose); manufactured according to TU 6-05-351-7-88 by the Namangan Chemical Plant.

Loesslike loam was used as a dusting agent.

Examples of the method.

1. Argillite-like clay of Bandykhanskogr from a 10-20 mm fraction, obtained by crushing in a jaw crusher and sieving, was treated in a mixer with a mixture consisting of 5% technical lignosulfonate and 3% loesslike loam. Then it was dried in an oven at 100-110 ° C, heat treated at 400 ° C and fired in a rotary kiln at 1080-1100 ° C. The expanded clay obtained had a bulk density of 350-400 kg / m, water absorption of 6-10% and a strength of 2-3 MPa.

2. The irtillite of the Jebel deposit of a fraction of 5-20 mm obtained by crushing and sieving was treated with a mixture comprising 2% QOL - bottoms liquid of the Namangak chemical plant with a density of 1.05-1.1 kg / m3 and 2% loesslike sug00 1CHE

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Link over 1b6% of the raw mix. Then it was dried at 100-110 ° C, heat treated at 500 ° C and fired in a rotary kiln at 1040-1060 ° C. The resulting expanded clay had a bulk density of 250-350 kg / m3, water absorption of 12-15% and a strength of 0.9-1.2 MPa.

. 3. The argillite-like clay of the Pachkamar deposit, crushed in a ball mill to 1 mm, was moistened to 24-26% and granules were molded from the plastic mass, which were treated with a mixture of 1% CB K - aqueous runoff in excess of 100% by weight of raw material, 1% pyrite cinder and 5% loesslike loam. Then it was dried at 100-110 ° C and heat treated at 400 ° C. After the granules were fired in a rotary kiln at 1070-1100 ° C. The expanded clay obtained had a bulk density of 300–350 kg / m3 — waterlogging of)) 14–18% and a strength of 1.0–1.2 MPa.

4. The argillite-like clay of the Pachkamarskoye deposit, fractions of 5-20 mm, was prepared by crushing and sieving, and was treated with a mixture including 1% Сё К (concentrated aqueous runoff and 3% loesslike loam (in excess of 100% raw material) after drying at 100 -110 С and heat treatment at a temperature of 400 ° С were fired at 1040-1100 ° С. The obtained expanded clay had a bulk density of 250-300 kg / m3, water absorption of 15-20%.

- 1.1-1.2 MPa.

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Comparative examples are summarized in table.

Expanded clay is characterized by a bulk density of 250-500 kg / m3, water absorption - 7-15%. The firing temperature is 1050-1100 ° C.

The simplification of the method is achieved by the fact that the raw granules are coated with a dusting mixture after they are molded or dried, and the clay gravel is coated after they are obtained or dried. This greatly simplifies the technology of dusting raw granules and crushed stone, and also improves the technical and sanitary conditions for working on the preparation and supply of dusting mixture and processing of granules with dusting mixture.

Claims (1)

The claims A method of manufacturing expanded clay, comprising forming granules or producing clay crushed stone, coating them with a dusting additive with an organo-alkaline and carbon-alkaline component and subsequent firing, characterized in that, in order to simplify the method, lower the firing temperature and water absorption, the granules or crushed stone are covered with a loess-like loam mixture , in addition, in an amount of 2-5% by weight of granules or crushed stone, and a solution of technical lignosulfonate, or still water or concentrated aqueous runoff, in an amount of 1-5% by weight of gr ku scheb- or "."