SU1728184A1 - Method of manufacturing ceramic products - Google Patents

Abstract

The invention relates to the ceramic industry and the Mohsst to be used in the manufacture of building ceramics, mainly bricks. In order to improve the molding properties by homogenizing the mixture, increasing the strength of the products and protecting the surrounding environment, according to the method of making ceramic products, flotation sulphide ore dressing wastes are condensed to a solids content in suspension of 60-70%. and then mixed with clay and pelitized feldspars up to pol1; H hmch of the mixture, including wt.%: sulphide ores 60-70 enrichment waste, pelitized feldspar 10-20, clay, the rest, after which the heating of the billets, drying and roasting are carried out. Physicomechanical indicators are as follows: product density 1800 kg / m, compressive strength 43-48 MPa, frost resistance 100 cycles, thermal conductivity 0.54-0.55 W / m & C. 4 tab. And /

Description

  The invention relates to the ceramic industry and can be used in the manufacture of building ceramics, mainly bricks.

A known method of making ceramics from a press powder is by plastic preparation of clay mass. molding on a vacuum press, drying to a moisture content of 0-3%, crushing the obtained granules to the size of 1-10 mm (for bricks) and 1-5 mm {for tiles), moistening them with a plasticine cleaner (for 5-10 units ) clay to a moisture content of 6-8%.

The strength of raw brick is 1-2 ML. in 4-8 hours 3-4 MPa. in a dry state, 4-7 MPa. at the same time brick density increases by 10-15%, water absorption decreases 1.5-2 times.

The disadvantage of this method is the low strength of the products, the considerable labor intensity of production, the swelling of the brick with reduced gas permeability.

The closest in technical essence and the achieved result to the invention is the method of pz / ogoleni of ceramic products, which includes mixing a good concentration of sulfide ore into 40% by weight of clay, formooonio. drying and firing.

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The disadvantage of this method is that the low strength of the products and the labor intensity of production due to the low molding properties of the mass ...

The purpose of the invention is to improve the formative properties by homogenizing the mixture, increasing the strength of the products and protecting the environment.

The goal is achieved according to the method of manufacturing ceramic products, which include mixing clay with flotation waste from the enrichment of sulphide ores, previously concentrated to 60–70%, and pelitized with 15 hollow spars before making the mixture. including components, mzz.%:

Sulfide ore enrichment waste

60-70. Politicized feldspars

- 10-20

Clay. Rest

Primer p. For the manufacture of ceramic products, clay, sulphide ore processing tailings and pelitized feldspar are used as raw materials.

 Characteristics of raw materials and properties of the components are presented in table 1-3.

Ceramic products, compositions and properties of which are given in the above section 4, are prepared according to the following technology.

 Initially, the tailings of the enrichment of sulfide ores, which are a finely dispersed suspension with a density of 1.26 g / cm3. incubated in the sump to a density of 1.G g / cm3, 35%. temperature 20 ° C and solids content 70%.

Crushed clay in a clay mixer is mixed with a slurry of tailings of the enrichment of sulphide ores and pelitized feldspars. The resulting mass is subjected.

20 25

thirty

35

Istipansho is used in wet-grinding runners, processed on coarse-ground rollers, then compressed at a pressure of 0.5 MPa and a vacuum of 0.8 kg / cm2. Raw 10% moisture is dried for 5 hours at 100 ° C and 4% humidity. The dried raw is roasted in a tunnel kiln at 950 ° C. From the analysis of the indicators, it follows that the proposed method for the manufacture of kera-. Compared to the known mass, it provides an increase in raw strength by 2 times, compressive strength by 1.3 times, frost resistance up to 100 cycles, simplified production technology, accelerated homogenization and drying, environmental protection, and improved molding properties.

Claims (1)

The invention The method of manufacturing ceramic products, including mixing clay with flotation sulfide feed enrichment waste, forming blanks, drying and roasting, so that with the aim of improving the molding properties due to homogenization, increasing the strength of products and protecting the environment; pre-flotation sulfide ore enrichment wastes are compacted to H. l of solid matter in suspension 60-70%, and when mixed, pelitized stubble spars are added to the half of the mixture, in wt.%; Flotation waste sulfide ores. 60-70 Politicized spars10-20 ClayE rest Table 1 table 2 Table 3 Table. BUT