The manufacturing technology of siliceous calcic goods reachs sort
From;    Author:Stand originally
Siliceous calcic insulation material is in order to oxidize silicon (quartz arenaceous pink, diatomite) , oxidation is calcic (broken bits of lime of useful also disappear, calcium carbide) and enhance fiber (wait like asbestine, fibre glass) for main raw material, course agitate, heat, gel, shape, evaporate pressing is sclerotic, dry a kind of when wait for working procedure to be made new-style insulation material.

1. Manufacturing technology

Lime adds water clear up, after filtering through 3 mesh, put the bucket that put a thick liquid, use slop pump to carry to mix inside mixture bucket diatomite, water glass, asbestine (or other staple) reach water to undertake mixture agitate together, send gel bucket to undertake heating with the thick mucus fluid after pump will mix next gel, send to among all fluid store groove, send toward pressurization of oil pressure machine to shape respectively again, the wet goods after shaping presses boiler evaporate to press sclerosis into evaporate, send to drying oven again next dry dehydrate, via sampling qualitative check epigenesis tastes put in storage. Whole technological process can generalize ground cent to be: Lime clear up, mixture burden, heat gel, pressurization shapes, a few measure such as evaporate pressing sclerosis and dry dehydrate. Of siliceous calcic goods shape craft cent is pouring shape with suppress. Pouring shape, the mould is simpler, manufacturing cost is inferior, but the goods after evaporate is raised must pass plastic level, still have structural degree of tightness not all, the phenomenon with misshapen appearance; Suppress shapes, need to have the pattern with appropriative compressor and high cost, but appearance of the goods after evaporate is raised is complete, the structure is even.

2. Phyletic

① has calcium of asbestine silicon acid. Serve as the siliceous calcium that enhances fiber to be made with asbestos fiber. ② does not have calcium of asbestine silicon acid. A kind of silicon acid that replaces asbestos fiber to be made with alkali resistance fibre glass is calcic. Without asbestine silicon acid calcium is on the main function such as thermal conductance, mechanical intensity and line systole, all rise somewhat than having calcium of asbestine silicon acid. Especially the improvement of mechanical intensity and brittleness, be helpful for engineering construction installation and loss reduce. ③ exceeds light siliceous calcium. What technology of siliceous calcic production uses is static law, and exceeding place of light siliceous calcium to use technology is dynamic law. It is static law only medium gel gel process is in dynamic law, agitate heats to be made below instead high pressure (amount much, volume is large) noncrystalline or inferior the hydrate with qualitative crystallization, next like static law pressurization shapes, evaporate pressing is sclerotic, reentrance drying oven is dry, the siliceous calcium that such shaping is called exceed light siliceous calcium, its thermal conductance, fight lose the property such as intensity all excel has calcium of asbestine silicon acid, especially density wants light 1/2, use temperature also raises 1000 ℃ by 650 ℃ . Silicon acid of ④ high strenth is calcic. Calcium of high strenth silicon acid is with silicon simple stuff and calcic simple stuff pass synthesis of to hydrate reaction, in order to hold the material that Beimolaishi is main crystallization body in the palm, use adhesive and the strength that enhance material to improve product, at the same time control compression ratio achieves density requirement, change craft condition will control thermal conductance, increase cut down agent to control shrinkage.
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