SU655678A1 - Mix for filling up worked-out space - Google Patents

Description

(54) MIXTURE FOR LAYING YOUR DEVELOPED SPACE

one

The invention relates to construction materials and mining operations by the underground method, namely laying the worked-out spaces of underground mines.

A mixture is known that includes, as a cement, ground granulated slag and aggregate 1.

Also known is a mixture for laying the mined-out space, including Portland cement, a by-product of zinc production, and waste rock 2, the disadvantage of which is the use of portland cement as a tarpaulin deficient material and reduced strength.

The last of these mixtures is the closest to the technical essence and achieves mm results to the described mixture.

The aim of the invention is to increase the strength, reduce the cost of the mixture and reduce the degree of environmental pollution.

The goal is achieved by the fact that the mixture comprising a stale and fine aggregate contains ground clay as a stale lime and kiln and calcined ground clay at a temperature of 650-700 ° C, and as a fine aggregate, the tailings of the mining and beneficiation plants , wt.%:

Pushmash5-8

Clay hammer,

fired at

650-700 ° С10-16

Tailings

mining and processing

factories76-85

The water flow rate is determined by the technological conditions for laying the mixture.

An example. The mixture is prepared from hydrated lime, calcined with ground clay and tailings of enrichment of ferruginous quartzites of Lebedinsky GOK, having the following chemical composition, Maa.%:

Claims (2)

The modulus of the GOK tailings size -0.45 is subjected to the strength test. Thus, the use of lime-fuzz, ground in an annealed mixture at 650-TOO C, and the GOK tails in the mixture allows to increase the strength of the mixture by 2-4 times, while significantly reducing mixture cost. 1 Moreover, the use of overburden rocks and ore dressing enrichment plants for the preparation of backfill mixtures will reduce the degree of pollution of the environment. Formula of the Invention Mixture for laying the depleted space, including ground and fine aggregate, That, in order to increase strength, reduce the cost of the mixture and reduce the degree of contamination of surrounding media, it contains a mixture of the following composition shown in the table. as grounding fluff pulp and ground clay burned at 650–70QC, fine aggregate tailings of the enrichment plants in the following ratio of components, wt.%: Fluff lime 5–8 Clay of the hammer burnt at 650–700 C10–16 Tailings of enrichment of mining and processing plants76-85 Sources of information taken into account in the examination 1. Kravchenko V. P., Kulikov V. V. The use of hardening bookmarks in the development of ore deposits. Nedra, M., 1974. 2. USSR author's certificate No. 528278, cl. From 04 B, 13/00, 1974.