Raw Materials for Synthetic Magnesite Refractory Products

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High iron synthetic magnesite, high iron & high CaO magnesite,magnesite alumina spinel, magnesite chrome spinel. All the kinds of synthetic magnesite and spinel are made from high quality magnesite ore and dolomite ore, by requiting and sintering them at high temperatures together with iron powder, chrome powder, and bauxite as an additive.

Index	Chemical Compostion /%					Physical Index
Brand	MgO	Al₂O₃	S_iO₂	CaO	Fe₂O₃	BD/g/cm³
MTS-68Aa	68-80		≤2.5	≤9.0	≥10.0
MTS-68Ab	68-80		≤3.0		≥10.0
MTS-68Ac	68-80		≤5.0		≥10.0
MFC-83A	≥83		≤1.0	7-8	6-8
MFC-83B	≥83		≤1.2	7-9	6-8
MFC-83C	≥83		≤1.5	7-9	6-8
MAS	28-29	64-65	5-8	1.2		3.20
MCa-32	63-65		≤1.0	31-33	≤3.0	3.30
MCa-25	72-74		≤1.0	23-25	≤1.0	3.30

Synthetic Magnesite is a kind of industry raw materials with properties of moderate basicity and chemical activity, widely used in the fields of national defense, medical, chemical, paper-making, shipbuilding and environment protection etc.

l Its primary technology application contain the areas as following: cellulose acetate, drilling mud, fire retardance filling, flue gas desulfurization, leather-making, oil refining additive, medical industry, rubber and plastics industry, sugar industry and wastewater treatment etc.

Q: Does the external wall thermal insulation materials level b1 need the fire barrier zone?: First, the cotton fire barrier zone "rock wool board" mainly uses water-repelling rock wool board produced by pendulum method as thermal insulation layer materia, and connecting and fixing base wall by binding and nail bonding, it is composed level A non-combustible building energy efficiency thermal insulation system by plastering layer composed by plastering mortar and glass?fiber mesh and decorative mortar finishing layer or coating. Rock wool board exterior insulation system, low thermal conductivity, good ventilation, combustion performance advantages of higher levels can be used in new construction, expansion, renovation of residential buildings and public buildings energy-saving exterior wall insulation works, including exterior insulation, fire Barrier non-transparent wall insulation and EPS external thermal insulation system. The introduction of main level A fireproofing EIFS on the present market (The following text is selected from China Building Standard Design and Research Institute " external wall thermal insulation building construction" Standard No. 10J121) Second, the foam concrete fire barrier zone 1. It is very green without the release of irritant and harmful gases; no mineral cotton floats do harm to human skin and the respiratory tract; production of?toxic?gases is security level (AQ1), there is no harmful gas and waste emissions and less carbon emissions; it exist not duplicate insulation demolition waste to pollute the environment.

Q: What is the strength of high strength refractory material?: Hefei Jiule decoration is answering your question: Use corundum as aggregate, high alumina cement as binder, mixed with a number of additives prepared, with high strength, and a hydraulic refractory casting material used in hot furnace lining at high temperature.

Q: Which brand of AAA refractory is good?: The most famous is fire dragon. The Morgan and Lu Yang are all very good at making common thermal insulation material. The price is not very expensive, and the quality is comparatively good. The refractories are capable of good thermal shock resistance ability and chemical errosion resistance ability It is a non-metal material with a low heat conductivity coefficient and expansion coefficient. It requires high temperature in nature. The production base of silicious thermal insulation board is difficult to transport raw material. The silicious thermal insulation board is a high temperature thermal insulation material with the raw material of non-porous refractory?aggregate and porous refractory?aggregate, organic fiber and inorganic fiber.

Q: What needs to be noted when choosing and using blast furnace fireproof materials? Who knows?: there are different temperatures in various parts of the blast furnace, thus using different types of refractory.

Q: how is the high-temperature flame-retardant fibre board?: ------ Different category of high temperature materials including refractory and heat-resistant material, inorganic compounds, high-molecular polymer. refractory usually refers to an inorganic material that can endure temperature above 1580 ℃ . They are for building kiln, combustion chamber and other buildings that require heat resistance materials. It is generally made of quartz sand, clay, magnesia mineral, dolomite.

Q: I would like to know if there is any requirement for refractories in the crucible type high-frequency smelting furnace Worry！ I hope you can help me! This time!: High enough for high temperature resistance. Refractory materials for crucibles shall be subjected to a high temperature greater than 1700 DEG C and the softening temperature shall be greater than 1650 DEG c;

Q: What is the type of heat resistance property of high temperature electric furnace ?: According to the levels of refractoriness : Common refractories: & Gt: 1580 ℃ ~ 1770 ℃ advanced refractories: 1770 ℃ ~ 2000 ℃ AAA refractories; 2000 ℃

Q: What is fire retardant coating mainly used for?: Fire retardant coating is a coating which is applied to the surface of buildings and structures and can form a protective layer of fire retardancy and thermal insulation. It can reduce the flammability of the coated materials and block the rapid spread of fire so as to improve fire endurance of the coated materials. Features of fire retardant coating: (1) Fire retardant coating itself has a flame-retardancy or non-inflammability, and it can prevent the protected substrate from direct contact with the air, and delay ignition and reduce the burning speed of the objects. (2) In addition to flame retardancy or non-inflammability, the fire retardant coating itself has a a low thermal conductivity, which can delay the transfer of flame temperature to the substrate to be protected. (3) When heating, fire retardant coating decomposes non-combustible inert gas to dilute the combustible gas decomposed by the protected, making it difficult to burn or slow down the burning rate. (4) Fire retardant coating containing nitrogen will decomposite NO, NH3 and other basic groups, which compound with the organic radicals and interrupt the chain reaction so as to reduce the temperature. (5) intumescent fire retardant coating will expand and foam when heating, and form a carbon foam insulation to block the protected objects, thus delaying the transmission of heat to the substrate.

Q: What are fire resistant level standards of class A fire resistant door?: Executive standard: GB12955-2008 Fire Door. Fire resistant level: Class A: 1.5h, B:1.0 h, C: 0.5 h. Thickness of door leaf: Class A: 50mm, B 45mm, C 40mm. Doorframe Specification: Class A, B, C. Door leaf form: Single open, double open, single open with glass, double open with glass, single open with glass and bright, double open with glass and bright, with a bright picture, Zimu glass Zimu glass with light. Doorframe Specification: Class A, B, Door leaf form: Single open, double open, single open with glass, double open with glass, single open with glass and brightness, double open with glass and brightness, double open with a lager door leaf and a smaller door leaf, double open with a lager door leaf and a smaller door leaf with glass, double open with a lager door leaf and a smaller door leaf with glass and brightness. Standard sizes: In line with GB5824-86 Hole Size of Building Doors and Windows."

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