RU2422640C1 - Filling mixture compound - Google Patents

Abstract

FIELD: mining. ^ SUBSTANCE: filling mixture compound containing Portland cement, filler and water includes wet magnetic separation waste with specific surface area of 80 m2/kg as filler; Portland cement M 400 crushed in disintegrator together with wet magnetic separation waste of ferruginous quartzites (WMS) till composite binding agent with specific surface area of 500 m2/kg is obtained, at the following component ratio, wt %: portland cement M 400 5-10, wet magnetic separation waste 17-22, the above filler 68-71, and water is the rest. ^ EFFECT: environmental protection, filler material is obtained, which binds in its structure the contaminants and excludes their migration to environment. ^ 1 ex

Description

The invention relates to the mining and mining industries, in particular to hardening filling mixtures.

The known composition of the hardening filling mixture, including ground blast furnace granular slag, Portland cement M 400, aggregate and water, while it contains glauconite sand and an additional activating additive in the following ratio of components, wt.%:

ground blast furnace slag 14.3-15.2 Portland cement M 400 2.2-2.3 glauconite sand 56.1-57.3 activating additive 6.1-7.2 water rest,

activating additive includes ground glauconite sand and SDB in a ratio of 100: 0.2-0.3. RU No. 1558102 IPC E21F 15/00

The disadvantages of the known filling mixture are the high cost, the impossible use of wet magnetic separation of ferruginous quartzite as part of the waste technology.

The purpose of the invention is the protection of the environment, obtaining filling material that binds pollutants in its structure, the exclusion of their migration into the environment. This goal is achieved due to the fact that the composition of the filling mixture, including Portland cement, aggregate and water, contains wet magnetic separation waste with a specific surface of 80 m ² / kg, Portland cement M 400, crushed in a disintegrator together with the waste of wet magnetic separation of iron quartzite (MMS) to obtain a composite binder with a specific surface of 500 m ² / kg, with the following ratio of components, wt.%: Portland cement M 400 5-10, waste wet magnetic separation 17-22, fill out al 68-71, water - the rest.

Magnetic separation wastes are individual particles consisting of both polymineral and monomineral aggregates. Monomineral grains of aggregates consist predominantly of quartz of acute angular, somewhat elongated irregular shape with a conchoid fracture. It was established that the quartz of MMC waste is generally characterized by a lower degree of crystallinity than the sand of the Volsky and Nizhne-Olshansky deposits. The most reactive is the chalcedony variety of regionally metamorphosed weakly ordered quartz, the content of which reaches 60% of the total amount of this mineral. The degree of crystallinity rises in the direction of regionally-metamorphic, folded-metamorphic and contact-metamorphic quartz. Most often, polymineral aggregates are found, which consist of particles of quartz isometric with grains of earth magnetite, hematite, and a small amount of amphibole grains that are elongated in one direction are present.

The filler is a finely divided fraction of wet magnetic separation waste - MMS, which has undergone fine grinding processing in a disintegrator together with Portland cement.

The use of a composite binder based on an activating additive in the form of a finely divided activated fraction of MMS with Portland cement significantly reduces the consumption of the clinker component - Portland cement, which generally reduces the cost of the hardening filling mixture.

Example

The filling mixture is prepared as follows:

Wet magnetic wastes with a specific surface area of 80 m ² / kg of separation and water are fed into the mixer, which also serves a composite binder prepared by disintegrating finely dispersed waste MMC ferruginous quartzite and Portland cement to a specific surface of 500 m ² / kg.

The whole mixture is mixed in the following ratio of components, wt.%: Portland cement M 400 5, waste wet magnetic separation 22, the specified aggregate 68, water 5 and, for example, by pipeline transport serves in the place of filling - mine workings. The resulting filling material binds pollutants in its structure and excludes their migration into the environment.

Claims (1)

The composition of the filling mixture, including Portland cement, aggregate and water, characterized in that it contains wet magnetic separation waste with a specific surface of 80 m ² / kg, Portland cement M 400, crushed in a disintegrator together with the waste of magnetic separation of ferruginous quartzite (MMS) ) to obtain a composite binder with a specific surface of 500 m ² / kg, with the following ratio of components, wt.%:
Portland cement M 400 5-10 wet magnetic separation waste 17-22 specified placeholder 68-71 water rest