Brick of magnalium pointed spar
A kind those who point to is identical structure mineral, chemical general formula can express to be AO-R2O3(or AR2O4) , among them A represents diatomic element ion, can be Mg2+ , Fe2+ ; R is tervalent element, can be Al3+ , Fe3+ , Cr3+ . They exist with the form of Tong Jing solid solution for the most part. All pointed spar borrow crystal lattice to expand fashion solid solution. The raw material that fireproof material uses by its and its composition can divide pointed spar pointed spar of the brick that it is chromium, chromic magnesia brick, magnesian chromic brick, magnalium is fireproof material. It is a kind of important neutral or alkalescent fireproof material, outside be being used at bag of furnace of kiln of high temperature industry, open-hearth furnace, electric stove, steel, furnace widely furnace of copper of regenerator of kiln of rotary kiln of chastening, cement, glass, refine.
Brick of 1. magnalium pointed spar
This kind of fireproof material includes chromic brick, chromic magnesia brick and magnesian chromic brick; With chromic pointed spar (or its solid solution) the burden that with Fang Mei stone is main and mineral composition to produce chromic qualitative fireproof material is You Ge normally pure peridotite of magnesia of mine, causticity or rejoin comprises. Chromite can be used make a brick directly. chromite fine molar hind with 5 ％ burn magnesian Shi Xifen gently to cooperate, via shaping, dry hind firing below 1550 ℃ make the brick that get chromium namely.
Brick of 2. magnalium pointed spar
Magnalium pointed spar (also weigh pointed spar) chemical type is MgO-A12O3, contain MgO 28.3 ％ , a1203 71.7 ％ , melting point 2135 ℃ . Magnalium pointed spar and photograph of magnesian chromic brick are compared, main good point is right of S03 of ／ of SO2 of C02 of reducing atmosphere, dissociate, dissociate and Na2O of free K2O ／ fight aggressivity strong, and have better heat brace up stability and wearability. Simple fireproof stuff can divide pointed spar it is 3 kinds: Spar of square magnesian Shi Yijian is fireproof material, a12O3 content <30 ％ ; Magnesian stone of pointed spar one party is fireproof material, a1203 content is 30 ％ ～ 68 ％ ; Pointed spar is fireproof material, a12O3 content is 68 ％ ～ 73 ％ . Zhengzhou flourish fills factitive Central Plains to be able to bear or endure material character, pay attention to the amplification of oneself dimensions not only, more important is to stand in long-term development point of view from beginning to end, ceaseless development gives new-style fireproof data, satisfy more firm market demand ceaselessly thereby, comply with the development of tendency of the day. Major of flourish Cheng Naicai produces all sorts of tall aluminous bricks, firebrick, argillaceous brick, pouring the product such as makings, welcome broad client to come to a factory make an on-the-spot investigation on the spot, establish long cooperative relationship
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