SU1033486A1 - Raw mix for making heat insulating products - Google Patents

Abstract

RAW MATERIALS Idea without lodov, it contains up to flax water with the following ratio of copolymers, wt.%: Exfoliated perlite. sand67-72 Orthophosphoric acid6-2O The hammer is plastic% clay6-1O ko Water7-12

Description

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00 SP The invention relates to the field of building materials and is pre-designated for dp heat insulation of industrial furnaces. Composition ij is known, which includes photofacient sticking, swollen perpetrators and CHP at the following ratio of components, wt%: Phosphate stranded25-45 Swelling and perlite4O-70 Ash-ash5-25 The disadvantage of this composition is relatively low strength raw material, which does not allow to form products without pallets and a high consumption of deficit-woghe of the phosphate-per-substance component. Composition 2j, including photofate to a crushing substance, dust from the furnace during the firing of expanded clay and expanded perlite 1phi, is known as follows: ratio of components, wt.% :. Phosphate-to-gallant (alumochrome and copper chrome) 39-65 Dust from the kiln during the firing of expanded clay. 3-15. Expanded peritEsalE The disadvantage of this composition is the low strength of the raw material due to the absence in the mass of plastic-binder. the component and the low degree of compaction of the products, as well as the high consumption are deficient in X and expensive binders. Also known is the composition, which injects exfoliated perps and orthophosphoric acid in the amount of 10-12% by weight of perlite, which corresponds to the following grade: Exfoliated perlite88,2-91 brtofosforcha acid 9-11,8 The disadvantage of this composition is the low strength of raw and products, received at his home. Closest to the invention by technical essence is the raw material mixture for the manufacture of thermal insulating material 4, containing, in wt.%: Expanded perlite sand 80 Ground refractory clay 20 Apyumophosphate bond or phosphoric acid (in excess of 100%) 20-40 V per 10O % content of all components, the ratio of the components of the mixture is as follows, wt.%: Expanded perlite sand 57-66, Hammer refractory clay 14.3-16 Apium phosphate bond or pyro orthophosphoric acid 16.7-28 A disadvantage of the known raw mixture is lowered and raw strength that does not allow to produce a mechanical pushing goods on large-size pallets, and high consumption of expensive and scarce components: aluminophosphate binder, of orthophosphoric acid. The aim of the invention is to increase the strength of the raw material while maintaining the bulk weight of the parts to allow the formation of the large size of the first parts without pallets. The goal is achieved by the fact that the raw material mixture for the manufacture of thermal insulation products, including. expanded perlite sand, orthophosphoric acid and ground plastic clay, additionally contains water at the following ratio of components, wt.%: Expanded perlite sand67-72 Orthophosphoric acid6-20 Hammer plastic clay 6-10 Water7-12 Introduction of organic phosphorus acid with R content to the mixture About 65-60% in the range of 6-20% provide high durability and water resistance of products. If the content of this acid is less than 6%, the strength of the products will be lowered due to the lack of acid to bond the clay, increasing the content of acid to more than 20% leads to cracking of the products and reducing their water resistance. The introduction of water in the range of 7-12% provides the optimum, from the point of view of the strength of the ryce, moisture content of the sections. At the indicated expenses of orthophosphoric acid, the content of expanded perlite is within the range of 67-72%. The introduction of perlite less than 67%. It does not allow to obtain sufficiently light products with strong raw material, since to obtain a light raw material with such a content of perlite, a relatively weak softening is required, which reduces the strength of the raw material. When the content of expanded perlite is more than 72%, the amount of clay and binder is not enough to bind the pearlite grains and obtain sufficiently readable material. The introduction of ground plastic less than 6% does not make it possible to obtain a sufficiently strong raw material, since plastic clay together with orthophosphoric acid is an earthen, ensuring the strength of the raw material. The introduction of ppastic clay and spine-forming mykerapa above 10% leads to the weighting of the product and reduces its strength. Example 1. 67% of expanded ne | The litas are mixed with 6% ground plastic clay, the parallel of 20% orthophosphoric acid with a content of 55% is equal to 7% of water. Then the mixture of expanded perlite with clay is mixed with a solution of rthophosphoric acid. The product is molded at. pressure of 0.62 MPa and dried for 3 hours at. . At a rate of 2. 69.5% of the expanded perlite is mixed with 8% ground TH3Holt clay, 13% of orthophosphoric acid is parallel with the content of FVO 55% mixed with 9.5% water, and the mixture of the expanded perlite mixed with ground clay is mixed with the obtained solution of phosphoric acid. The products are molded at a pressure of 0.64 MPa and heat treated for 3 hours at ..

Example 3. 72% of expanded perlite is mixed with 10% ground clay, 6% orthophosphoric acid with Ac content is diluted with 12% water and. After that, the mixture of expanded perlite with clay is mixed with orthophosphoric acid. Products molded at a pressure of 0.67MSH and dried for 3 hours at.

Specific compositions of the proposed mixture and known are listed in table. one.

T and n and. c a 1

Physico-mechanical properties of raw and products from the proposed raw mix and known are listed in table. 2

T a b p in U a 2

From tab. 2 it follows that PRHCH'X: to push through the raw material from the proposed raw material mixture is greater than the raw material from the known mixture while maintaining the bulk mass.

55 Increasing the strength of raw material for punching provides the possibility of forming large-sized products without pallets, which makes it possible to exclude from

-S1033486

Technological support of the npooeccia operation: removal of the dispatch on the direction of the pallets, loading them onto the trolleys upwards, pushing the pallets to

return to technopogical iachap, tipeccy.

Claims (1)

RAW MATERIAL MIXTURE FOR THE PREPARATION OF HEAT-INSULATING PRODUCTS, including expanded perlite sand, phosphoric acid, and ground plastic clay, with the exception of the fact that, with a chain to increase the strength of raw materials while maintaining the bulk mass of the products to enable molding large-sized products without pallets, it contains up to. excitingly water in the following ratio of components, wt.%: Expanded perlite sand Phosphoric acid Ground plastic clay Water 67-72 6-20 6-10 7-12 SU .... 1033486 25-45 40-70 5-25