SU1126556A1 - Raw mix for making silica products - Google Patents

Abstract

RAW MIXTURES FOR THE MANUFACTURE OF SILICATE PRODUCTS, including lime, phosphorite ore dressing wastes and solid fuel burning waste, characterized in that, in order to increase strength and frost resistance, it contains ground fuel spack as a waste and solid fuel, and additionally phosphogypsum with the following the ratio of components, wt.%: Lime6-8 Waste enrichment of phosphate ores84-90 Ground fuel cleat1-2 Phosphogypsum3-6

Description

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Od JV JV

o The invention relates to the industrial use of building materials and can be used in the manufacture of silicate products. The known raw material mixture pj For the manufacture of silicate products, including, wt.%: Lime 10-20; sand 70-881 fluorine-containing waste superphosphate production 2-10. Also known is the C2 mixture of C2 for the manufacture of silicate products, including, in wt.%: Lime lime 4-6; quartz sand 83.4-83.6; ground grantspak 10-12; gypsum anhydride 0.4-0.6. Closest to the present invention is a hot mix for the manufacture of silicate products, including, wt%: magnesia lime 4-8; silica-containing component chamber phosphate enrichment waste 54-87; Ola from the combustion of oil shale 12-45; in addition, the mixture additionally contains chlorinated and 0.2–5 .31. The disadvantages of lime mixtures are low strength and lack of frost resistance. The purpose of the invention is to increase strength and frost resistance. The goal is achieved by the fact that the raw material mixture for the manufacture of silicate products, including lime, phosphorus and ore waste, and solid fuel burn, contains ground fuel slag and additional phosphogypsum in the following ratio of components, wt.% : Lime6 8 Waste enrichment of phosphate ores 84-90 Ground fuel shpak1-2 Phosphogypsum 3-6 Waste forging ore can be used as forging ore for forite ores or as a mixture of flotation waste. The proposed mixture of components (very cheap), production of waste, for example, the enrichment of phosphorite ores, the extraction of phosphoric acid, and the burning of coal, makes it possible to obtain products with high strength and frost resistance. An important role is played by the mineralization component of the phosphate ore wastes — calcium phosphate, which accelerates the process of forming high-quality material. Phosphogypsum, by virtue of its properties, provides a significant increase in the strength of the raw material after molding, and the rate of increase in strength is estimated at 10-15 minutes. Phosphogypsum. they are introduced into the raw mix after its preliminary mixing with thin slag (3, ..., 20003000), which increases the resistance of phosphogypsum after its hydration, and consequently, the frost resistance of finished products. Use in the composition of the mixture of calcium lime in the composition with phosphogypsum leads to a more active interaction of the components of the mixture compared with the known compositions. It is known that magnesia lime inevitably contains a significant amount of inert burnout. It is also important to note that the addition of phosphogypsum contains active impurities, effectively increasing the solubility of the calcium and silicon-containing components of the mixture, which contributes to an increase in the content of hydrosilicate neoplasms. Example. In the preparation of SF mixtures, phosphorite ores are used as a filler. The Chilisay field of the Aktyubinsk basin, as a mortar, is a mixture of lime that meets the requirements of GOST 9179-70, and phosphate ore wastes in the ratio of 1: 1, and as additions - Phosphogypsum and ground slag from burning solid fuel. To carry out comparative tests on known compositions, chamber waste (flotation waste) of phosphorite, ash from the combustion of oil shale, magnesia lime, ground granulated slag, quartz sand, and two-water gypsum were used in experiments. In addition, ammonium chloride and carbide are also used. The chemical composition of the components used is given in table. one.

Table 11

Chamber phosphate enrichment wastes

8.30 6.4 1.58 Else

Components

Kjo

Ash from the burning of oil shale

Magnesia lime

Granulated

The modulus of the phosphorite ores enrichment wastes size is 1.7, chamber enrichment wastes for phosphorite 1.8, quartz sand 1 ,. The surface area of the spike is 20003000, the ash from the burning of oil shale is 1500-2000, and it is lime-mineral in a living 2500-3000.

Source components Crush, dispense and .in a laboratory mixer 0

Components

Phosphoritic ores enrichment wastes 76 80 84 72 88 Lime-spreading mortar Phosphogypsum ash from burning combustible shale Chamber phosphorite enrichment wastes Magnesium lime Dioxide-rich ammonium content of components above and below opt

Continued table.11

Oxides content, May. %

; 0pp.d. PjOg COjF

Rest

19.8

Rest

First, lime and phosphorite ore dressing waste are interchanged in a 1: 1 ratio. The resulting batch is then added to the aggregate. This mixture is injected with a preliminarily prepared additive from a mixture of phosphogypsum and slag.

The compositions of the raw mixes are given in table. 2

.Table 2

Content, May.%, In blends

Preposition

Prototype

lEIin nOZEIZlL 16 14 64 2 2 --- 2 2310342 1 1-–12 28 33 - --87 67.8 54 4 8 ---- 1 0.2 5 minimum.

From these mixtures with a humidity of 1012% form cylinder samples at a specific pressure of 200 kgf / cm. . Some of the samples obtained are used to determine the raw strength, and the rest are steamed in an industrial autoclave of the Experimental Plant.

VNIIstrom mode 3-8 + 3 h at a temperature of 174, and a pressure of 9 atm.

The obtained samples are used according to standard methods.

Physico-mechanical properties of the samples are given in table. 3

table 3

Claims (1)

RAW MATERIAL MIXTURE FOR THE PRODUCTION OF SILICATE PRODUCTS, including lime, phosphate ore dressing waste and solid fuel combustion waste, characterized in that, in order to increase strength and frost resistance, it contains burned waste! I solid fuel ground fuel oil and additional phosphogypsum in the following ratio of components, Lime Phosphate ore dressing waste. Ground fuel stick Phosphogypsum May. SU, „. 1126556