SU67155A1 - The method of obtaining high strength gypsum - Google Patents

Description

C-bitumen methods for producing high-strength plaster are based on the principle of treating sy | south crushed gypsum stone with steam under a pressure of 1.2-1.3 atm, either by feeding steam into the apparatus in which the process is underway (. Steaming method), or at the expense of steam, formed in appa1) ate in the process) azlozhavenk () go gypsum (self-salary method:).

In the production of soils: oprocny gypsum, the following is occurring: smallpox D - ;; 1b; e oiiepaniLi: fractional heat,: 1 rsdza) 1; bodies: iomol pasture. In some methods in the main apparatus, only the preheating of the crushed gypsum is carried out on its time: first, the same, and the grinding is carried out in other devices (as well as the method). P | 1 and the methods in the main apparatus are carried out by heating the gypsum stone, its decomposition and the hemihydrate essence; Grinding is carried out in a separate apparatus.

P |) and the essence of the Drinking process, to obtain high strength foot plaster} - fractions from 20 to 50 mm should be used, smaller fractions are waste products.

According to the proposed method of obtaining high-strength gypsum using a self-sealing method, the whole gypsum stone, including fine fractions, is worked out.

All axis operations: suspending crushed raw gypsum, decomposing — ie, gypsum per hemihydrate and water, eheshka hemihydrate and grinding grinding proceed in the same apparatus (drum), which significantly reduces the entire process, reduces the number of mechanisms for processing gypsum, reduces it power consumption.

The gypsum loaded into the apparatus is all the time in motion, with its continuous chopping. This achieves continuous and uniform exposure to steam, which speeds up the decomposition of gypsum and improves the quality of the product.

 iciipcj) b ::; n :; -; i. )) The mixing of grinding material is achieved by rotating oajjaoaHa, which is melted with chalk by the bodies in the desired amount.

PRIOR DIRECTORSHIP and

. Sig) compilation of the very oily hyis by self-sealing, with c (): 1 e1cei of the processes of dehydratation and drying in one aiarate, o t ;; ;; H aII II ii with the fact that ujjouccc TepMiuiecKoii process treatment sozmoshat c) scrap it.

2. lijM-ioM 1: Check out the method according to claim 1, characterized in that it is missed in; gr; 11day1, eaten: from ba) abapa, into 1-;