Choice bauxite needs to evaluate a few elements as fireproof material, in order to ensure bauxite satisfies high temperature capability, be able to bear or endure the requirement of chemical sex and integral wear. Bauxite is alumina (Al2O3) main source, alumina is the crucial part of expensive aluminous simple fireproof stuff. It is the detailed guideline that how chooses bauxite for fireproof material application below:
1. understanding applies for requirement A. Be able to bear or endure temperature of lukewarm sex job: Decide the temperature upper limit that fireproof material will face and floor level temperature. To involving the application of high temperature, can choose the bauxite with alumina high content. B. Chemical environment slag and metallic interaction: The chemical composition of the slag in consideration application and melt metal. Bauxite should resist specific chemical environment, in order to avoid degradation. C. Mechanical stress wears away and erode: Evaluate the mechanical wear that fireproof material will experience and stress level. Bauxite should have good mechanical strength and wearability.
2. evaluates bauxite property A. Alumina content tall bauxite: Choice alumina content is high (exceed 50% normally) bauxite, use at need good hear resistance and be able to bear or endure the application of chemical sex. Alumina content is higher, the performance of fireproof material is better. B. Foreign matter 2 oxidation silicon (SiO2) : Low content of 2 oxidation silicon is ideal, because silicon of oxidation of second year in high school can reduce the performance of fireproof material. Examine content of 2 oxidation silicon, ensure its are inside acceptable range. Ferric oxide (Fe₂O 3) : With content of low ferric oxide, because tall iron content is met,the function of pair of fireproof material and function produce negative effect. C. Fireproof sex melting point: Ensure bauxite has high melting point, what this conduces to fireproof material is high temperature resistant quality. D. Accumulation density density: Higher accumulation density states material density is bigger normally, hole is less, can increase mechanical intensity and thermal stability.
3. analyses physics and chemistry A. Physical character particle size distribution: Evaluate particle size distribution, the fireproof data that anticipates in order to ensure its are applied to applies. Consistent bead diameter can improve the quality of the product. Than expressing an area: Consider the area that compare a list, because it affects the felt function of fireproof material and integral performance. B. Chemistry becomes minute of chemical analysis: Undertake chemical analysis to bauxite, in order to decide its part, include silicon of alumina content, 2 oxidation, ferric oxide and other foreign matter. Ensure chemical composition accords with the requirement that fireproof material uses.
4. considers treatment and quality control A. Machine requirement to calcine: Whether does affirmatory bauxite need to calcine in order to improve its performance. High temperature to calcine can pass purify impurity and the performance that improve alumina content to improve fireproof data. B. Quality controls test and standard: Ensure bauxite accords with the occupation standard that fireproof material uses and standard. Undertake quality controls a test with test and verify its applicability.
5. evaluates supplier and usability A. Supplier dependability fame and outstanding achievement record: The choice is offerring respect of high quality bauxite to have the supplier of good reputation and outstanding achievement for fireproof material application. B. Usability and supply catenary consistency: Ensure reliable supply the consistent usability of catenary and bauxite. Produce plan and quality for answering Yu Wei to hold regularly crucial.
6. evaluates cost and economic element A. Bauxite cost price: Compare the bauxite cost of different supplier, consider material quality and the macroeconomic effect that produce to fireproof material. B. Cost effectiveness analyses function and cost: Balance the cost of bauxite and its function feature, in order to ensure its offer good value to expect application. 7. Executive test and A of test and verify. The lab checks sample: Undertake to bauxite sample the lab checks, with test and verify its physics is mixed chemistry. Ensure its accord with the specific requirement of fireproof material. B. Pilot experiment uses a test: Before applying actually, in undertaking to bauxite, try or experiment in a small way, observe the property that its leave in actual condition.
The bauxite with conclusion right choice needs pair of its alumina content, impurity, physics and chemistry and treatment requirement to undertake integral assessment as fireproof material. Have suitable test through considering these factors, the bauxite that you can ensure place is chosen will offer necessary function and durable sex for high temperature application.
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