Filling mixture composition

FIELD: mining.

SUBSTANCE: composition of a filling mixture, containing cement, a surfactant, a filler and water, as a binder it additionally contains a ground blast-furnace granulated acidulous slag, containing particles of less than 1 mcm of at least 4.3%, the surfactant is a superplasticiser SP-1, and the filler is a mixture of wastes of dressing of wet magnetic separation of ferric quartzites with slag crushed stone at the following ratio of components, wt %: cement - 4.85; specified slag - 12.1; specified crushed stone - 10; specified wastes - 55; superplasticiser SP-1 - 1.0% from cement; water - balance.

EFFECT: reduced consumption of cement, increased strength of massif, recycling of mining and metallurgical industry wastes and wastes of ferric quartzites dressing, reduced contamination of environment for considerable improvement of environment in the region.

1 ex, 1 tbl

 

The invention relates to the mining industry and can be used in the development of mineral deposits with the mined-out space.

Known filling mixture comprising cement, ground granulated blast furnace slag, aggregate, and water in the following ratio, wt.%: cement - 2; ground granulated blast furnace slag - 18,4; aggregate - 61,38; water - other [1]. The disadvantages of this mixture are low strength (3 MPa at the age of 90 days).

Known filling mixture comprising cement, ground granulated blast furnace slag, aggregate - crushed diabase, chopped straw and water in the following ratio, wt.%: cement - 2,9-5,07; ground granulated blast furnace slag - 15,21-16,91; aggregate - 52,24-53,22; water - the rest [2]. The disadvantages of this mixture are also low strength (5,12 MPa at the age of 180 days).

In addition, the composition comprising cement, ground granulated slag and water, and as aggregate technical sulfur, a modified iodine, and ash CHP, in the following ratio, wt.%: cement from 4.2 to 7.0, sulfur 19,4-29,26, ash CHP - 10,1-15,24, granulated slag - 26,7-39,6, iodine - 0,0038-0,0058, water - the rest [3]. The disadvantage of this mixture is the increased consumption of binders (28-46%) and low strength (6,9 MPa at the age of 180 days).

The closest present invention is a compound of backfill mixtures containing cement, surface-active additive (sodality waste alumina production), inert filler (limestone fraction 10 mm) and water in the following ratio, wt.%: cement - 9,5-11,4, sodality waste alumina - 0,57-0,91, filler 71,4-73, water - the rest [4].

The disadvantages of this structure are increased consumption of cement (9.5 to 11.4 per cent) and low in a sufficiently large amount of cement strength (4,2 MPa at the age of 1 month) and limiting waste beneficiation and metallurgical industries.

The task of the invention is the reduction of cement consumption, improving the strength of the backfill array at the age of 28 days and increase recycling industrial wastes.

To solve this problem is proposed composition of the backfill mixture comprising cement, surface-active additive, filler and water, characterized in that as the binder further comprises a ground granulated blast acidic slag containing particles less than 1 μm is not less than 4.3 percent, as surface-active additives superplasticizer SP-1, and as a filler, a mixture of tailings wet magnetic separation of ferruginous quartzite with was the new rubble, in the following ratio, wt.%: cement - 4,85; specified slag - 12,1; specified rubble - 10; these waste - 55; superplasticizer SP-1 - 1.0% of cement; water - the rest.

The technical result - the reduction of cement consumption, increasing the strength of the array, the disposal of mining waste production and waste beneficiation of ferruginous quartzite, reduction of pollution, to improve the ecological environment of the region.

According to the official site: http://www.ktprom.ru/plast.htm, www.yarhim.ru/news/2006/10/news15/?print=page, http://www.polyplast-un.ru/rus/sp-1/ - superplasticizer SP-1 is a synthetic organic substance on the basis of a product of condensation of naphthalenesulfonate and formaldehyde with a specific ratio of fractions of different average molecular weight, polynaphthalenesulfonate or methylenbis(naphthalenesulfonate)of sodium. Classification GOST 24211 refers to plastifitsirujushchej-water-reducing mind - superplasticizers. Chemical composition: methylenbis (naphthalenesulfonate) sodium or polynaphthalenesulfonate. Superplasticizer SP-1 produced according to TU 5870-005-58042865-05 and designed (use):

- to increase the workability and formemost concrete mixes without compromising strength and performance durability of concrete (at constant odocument the relation);

for a substantial improvement of physico-mechanical properties and the structural properties of concrete (while reducing water consumption and constant workability);

- to improve the workability of concrete mixtures and improve the physico-mechanical and structural properties of concrete (while reducing the water / cement ratio and increasing the workability);

- to reduce cement consumption without reducing the workability of concrete mixture, physico-mechanical and structural properties of concrete by reducing the water content in concrete mix).

Example. Granulated blast acidic slag with quality factor K=1,23, crushed in a ball mill until the particles: less than 1 µm and 4.3%, less than 3 μm - 12,6, less than 5 μm and 17.2%, mixed with cement PZ D20, waste enrichment wet magnetic separation of ferruginous quartzite containing particles: less than 1 µm and 3.4%; less than 3 μm - 12,6; less than 5 μm and 17.2%, and slag macadam 10-20 mm and shut the water, which had previously added superplasticizer SP-1. The final mixture was mixed to a uniform consistency. The resulting mixture is prepared samples of size 70×70×70 mm, the Samples were kept in a climatic chamber for 2-3 days before reaching the Stripping strength of the samples. As the ore was maintained temperature 20±20°C and relative humidity of 90-95%, i.e. conditions similar to the conditions of curing of the array in the mine. After demoulding, the specimens were again placed in the climatic chamber for further curing for 28 days, after which determined the mechanical strength using a hydraulic press. The following results are obtained: mechanical strength - 7.0 MPa at 28 days of age when the amount of cement is 4.85% of the total volume of waste - 94,0 wt.% dry matter.

In the prototype when the cement content of 10.5%, the mechanical strength of 4.2 MPa at 28 days of age when the total volume of waste - 87,4 wt.% dry matter.

The table shows the original gross composition of the mixtures and the results of testing the mechanical strength of samples prepared from these mixtures.

From the table it follows that the task of increasing the mechanical strength backfill mixtures according to the prototype (4,2 MPa) while reducing the cement and increase the amount of waste is achieved by adding as a binding domain of ground granulated acidic slag containing at least 4.3% of particles less than 1 μm and used as a filler mixture of tailings wet magnetic separation of ferruginous quartzite with slag crushed stone.

Literature

1. Lukowski, Emeneau Kuip. The use of blast furnace slag dump for the preparation of binding of filling mixture. - Mining magazine, 1979, No. 1, p.39.

2. Patent 2270921 published 27.02.2006,

3. Patent 2302531 published 10.07.2007,

4. AS published 15.06.1982,, bull. No. 22.

The composition of the backfill mixture comprising cement, surface-active additive, filler and water, characterized in that as the binder further comprises a ground granulated blast acidic slag containing particles less than 1 μm is not less than 4.3 percent, as surface-active additives - superplasticizer SP-1, and as a filler, a mixture of tailings wet magnetic separation of ferruginous quartzite with slag gravel in the following ratio, wt.%:

cement4,85
specified slag12,1
the specified rubble10
these wastes55
superplasticizer SP-11.0% of cement
waterrest



 

Same patents:

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EFFECT: reducing the consumption of cement at maintaining the accuracy of massif, utilisation of wastes.

2 tbl, 1 ex

FIELD: mining.

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4 tbl

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1 ex, 2 tbl

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4 tbl

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1 tbl

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3 cl, 1 tbl, 6 ex

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2 cl, 2 tbl, 1 ex

Concrete mixture // 2405748

FIELD: chemistry.

SUBSTANCE: invention relates to industry of building materials, particularly to preparation of concrete mixtures for making articles to undergo glasing. The concrete mixture contains the following in wt %: slag portland cement 20-30; crushed granular blast furnace slag of the 5-10 mm fraction 34-42; chamotte of the a fraction smaller than 5 mm 16-20, crushed expanded pearlite of the 5-10 mm fraction 16.0-22.0, with water-to-cement ratio of 0.5-0.6.

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1 tbl

FIELD: chemistry.

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EFFECT: increase of mixture technical characteristics.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and specifically to composition of a concrete mixture for roofing panels and a method of making the said panels. The concrete mixture for roofing panels which contains slag portland cement, blast-furnace coarse aggregate, fine aggregate, plasticising additive, tempering liquid, contains blast-furnace coarse aggregate with particle size of 10-25 mm, the fine aggregate in form of granular blast furnace slag with particle size of 1-3 mm and the plasticising additive in form of powdered Relamix Type 2 and an additional hardening activator - fine-grained mining sand which contains 10-20% garnet mineral, an ash-slag mixture, calcium chloride, water, structured 10-15 minutes before preparation of the concrete mixture through ultrasonic treatment at 18-21 kHz, with the following ratio of components in wt %: slag portland cement 25-35, said crushed blast furnace slag 10-18, said mining sand 15-20, said sand from granular blast furnace slag 5-20, Relamix Type 2 0.1-0.2, calcium chloride 1, said tempering liquid 13-25, ash-slag mixture - the rest. The method of making roofing panels from the concrete mixture described above involves filling a mould with reinforcement and the concrete mixture, compacting for 15 minutes through ultrasonic oscillations at 18-21 kHz and ageing for 2-3 hours, with subsequent treatment by pouring water into the mould, structured through ultrasonic treatment at 18-21 kHz and hardening for 28 days.

EFFECT: increased strength and frost resistance.

2 cl, 1 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to construction materials, specifically to a construction mixture and a method of making concrete from the said mixture and can be used in making concrete and reinforced concrete products. The construction mixture contains cement, sand, filler, complex additive and tempering liquid. The cement used is slag portland cement, the sand used is mine sand - iron ore tailings from Abagursky agglomerative-concentration plant, the filler used is crushed blast-furnace slag, the complex additive used is Relamix. Type 2, and the tempering liquid is freshly structured liquid in amount of up to free-running mass, with the following ratio of components: slag portland cement - 15-18; blast-furnace slag - 50-60; said mine sand - 21.9-34.7; Relamix. Type 2 - 0.1-0.3. The method of making concrete from the said construction mixture involves putting the tempered mixture into a mould, packing and hardening. The construction mixture is put into the mould. After 2.5-3 hours from the tempering moment, the mixture is further treated with structured water.

EFFECT: higher quality of concrete and shortening of its hardening period.

2 cl, 2 tbl

Mortar // 2389704

FIELD: chemistry.

SUBSTANCE: invention pertains to production of construction materials. The mortar contains the following in wt %: portland cement 8-15; metallurgical slag - dry cooling steel-smelting slag of having the following composition in wt %: CaO 44.0-48.3; SiO2 25.6-27.1; Al2O3 2.4-3.2; Fe2O3 10.2-11.1; MnO 1.4-2.04; MgO 6.0-7.2; Cr2O3 0.6-1.2, ground to specific surface area of 490 m2/kg, 32-45; sand which is activated in a stream under the effect of electromagnetic radiation in the UV range 15-28; dust from electrofilters of cement factories 8-15; water - the rest. The mortar contains the said autoclaved slag.

EFFECT: increased compression strength of concrete made from the proposed mortar.

2 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to high-strength concrete and can be used in making articles in civil and industrial construction, monolithic construction, concreting densely reinforced structures, as well as for erection of special-purpose structures. The high-strength concrete prepared from the crude mixture containing a complex additive which is a sol of iron (III) hydroxide with density 1.021 g/cm3, pH 4.5-5.5 and super-plasticiser Muraplast FK 63, with the following ratio of components in wt %: 85.50-86.00 and 14.00-14.50 respectively, with the following ratio of components of the crude mixture in wt %: portland cement 20.60-27.40; sand 21.80-24.70; crushed rock 42.40-44.50, said additive 0.70-0.90; water 7.70-9.30.

EFFECT: reduced wear capacity of the concrete.

1 tbl

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