Silicon line stone is a kind natural and advanced fireproof and mineral, it has heat to expand rate is low, fight metallurgy slaggy with all sorts of glass fluid erode, high temperature wearability is good wait for a characteristic. Its manage turning performance is better than tall aluminous brick, fireproof 1830 ℃ of degree of 1770 ～ , loading bate begins 1650 ℃ of bit of 1500 ～ .
Utility of silicon line stone 1 high temperature resistant prevent wear paint; Stone of 2 silicon line is able to bear or endure character bolide; 3 styrene law kaolin - qualitative heat insolation of silicon line stone is fireproof goods; Adventitious of 4 high strenth fireproof material, it is build by laying bricks or stones build furnace of high temperature kiln with fireproof mud; 5 rare earth are compound carborundum material; A kind of 6 compound and adiabatic high temperature is fireproof coating; 7 those who have high temperature to enhance action oneself is fireproof and pouring makings.
In the tall aluminous brick of fire, the brick that adds silicon line stone is called normally brick of silicon line stone. Call brick of tall aluminium of silicon line stone commonly, firebrick of silicon line stone is made by silicon line stone, as a result of its the SiO2 of oneself and Al2O3 distributing even, product firebrick structure is even, approach balance state very much, physical target is better.
Brick of silicon line stone is brick of tall aluminium of a kind of modified. The creep character to brick of silicon line stone and mechanism had expert of a few tall aluminous bricks thorough system discusses, the creep curve of brick of stone of line of 400-1500 ℃ silicon cent is 3 sort model. The first sort: Accord with the form of general creep curve. In inchoate phase, creep rate falls gradually, it is creep rate is fixed next wait for fast creep phase, creep rate increases ceaselessly. The creep curve of this kind of type basically appears in the low creep brick of 1400~1500, namely brick of silicon line stone appears in general tall aluminous brick.
The 2nd kind: The inchoate phase of creep curve is the decelerate creep phase that creep rate falls. After proper time, creep rate is 0, creep rate does not change at any time, namely creep rate keeps balance. The 3rd sort: Creep curve is the decelerate creep phase that aurelian gearshift rate falls. When creep rate reachs maximum, aurelian gearshift rate turns into negative worth, see increase gradually, creep rate falls gradually. Basically appear in] 500~1550 its are low in brick of creep tall aluminium, be in namely brick of silica, corundum is added in tall aluminous brick commonly.
Besides vitreous effect and crystallization effect, the Molaishi that still has silica changes effect. When vitreous effect is in dominant position, the creep rate of material is. Creep curve is the first kind; When silica Molaishi is changed when effect and crystallization effect are in dominant position, expand namely effect takes dominant place, aurelian gearshift rate is negative, creep rate is the 3rd kind; When two kinds of adverse effect are equal, contract and expand quits, creep curve is the 2nd kind.
Afore-mentioned argument provided academic basis for the development of brick of low creep tall aluminium. But brick of tall aluminium of low creep of silicon line stone still has a variety of variety. Divide general outside the brick of silicon line stone in tall aluminous brick, general the silicon line in tall aluminous brick stone brick and corundum brick, the brick of silicon line stone in still having stuff of the brick of silicon line stone in synthesizing Mo Laishi material, corundum. The creep curve of brick of low creep tall aluminium can have these silicon line rock for certain a few difference. Need discusses further.
Brick of silicon line stone is point to cut of raw ore of stone of natural silicon line piece or the firebrick of silicon line stone that powder of silicon line stone makes. Raw ore of silicon line stone comes in channel kiln to calcine commonly 1500 ℃ , make its bulk change reachs steady state. Clinker is smashed barren Sichuan. In this kind of grog, join proper plastic clay to make preform, can use at making firebrick. After bad put oneself in another's position is dry, in channel kiln 1700 ℃ fall firing Mo Laishi brick.
Brick of silicon line stone has the following characteristic: Stone of ① silicon line provides firebrick data, be helpful for improving the function of firebrick. As the accretion of silicon line stone, its effect is more and more apparent. Content of the Al2O3 in stone of ② silicon line is high, firebrick is not burned shorten, al2O3 content is low, firebrick is burned shorten bigger. The participation of stone of ③ silicon line does not affect the hole rate of firebrick and bulk density.
Content of Al2O3 of silicon line stone is high, temperature of firebrick load bate is high, but firebrick intensity is low. The industrial kiln furnace that brick of silicon line stone applies to the industrial department such as steely, chemical industry, glass, pottery and porcelain, wait like tub of column of flue, firebox, furnace door, furnace, boiler setting, steel, slide.
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