Flint Clay

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800T m.t./month

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Product Description:

Calcined flint clay has been processed through a series of procedures, such as remove impurities, magnetic-selected to move iron and spraying drying etc. Water-washed kaolin has been used very effectively as functional filler in ceramic and so on.

Calcined flint clay is mainly used for manufacturing high-quality refractory products, refractory castable, sagger, kiln furniture, crucibles, ceramic fiber, precision casting sand, ceramics products, etc.

Features of calcined flint clay:

High refractoriness.

Physicochemical stability.

Volume density high.

Low porosity.

Low water absorption.

Fully calcined.

Low impurity content.

Pure white.

Specifications of calcined flint clay:

Size of particles: 0-1mm, 1-3mm, 3-5mm, 5-8mm, 8-15mm, 0-5mm, 0-50mm.

Size of sand: 8-16, 16-30, 30-60, 30-80, 60-80, 80-120 (mesh).

Size of powder: -200mesh, -270mesh, -325mesh.

Physical and chemical index of calcined flint clay:

Item/GradeYNS45YNS45YNS44YNS44YNS43YNS42YNS40YNS36
ABAB
Al2O3 %46-4845-4844-4844-4843-4842-4640-4636-42
SiO2 %49-5249-5250-5350-5350-5350-5350-5450-55
Fe2O3 % (max)1.01.151.31.52.02.53.03.5
TiO2 % (max)0.80.80.90.91.01.11.21.3
K2O+Na2O % (max)0.30.30.40.40.40.50.50.6
Ca0+Mg0 % (max)0.50.50.50.50.50.60.70.8
Bulk density g/cm3(min)2.582.552.522.502.452.402.372.30
Refractoriness °C(min)17801770176017501740172017101700
Impurities % (max)0.51.52.02.53.03.54.0


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Q:What refractories are accessible with ease in daily life?
Basically there have all materials. But it depends on your needs.
Q:Who knows what fire heat preservation material are there?
Organic material, polystyrene board, plastic extruded board, phenolic resin. Sea capacity module (fire insulation materials fire performance can reach the B1 level, thermal conductivity is only 0.028w\m - K is a good choice, class A fireproof materials now is the mainstream rock wool (mineral wool is wool). A1 fire resistance The largest manufacturer is Thai stone rock wool Co. Ltd.
Q:What kinds of refractory materials that uses a-Al2o3 powder? What are the purpose of it?
04La-Al2O3 powder is a alumina powder whose raw material is industrial aluminum oxide which has been calcined at high temperature. It is a good polishes for ceramics and jade, meanwhile, it is also an important raw material for high-end refractory materials. The technical indicators parameters A1023 mark A1535 chemical composition AL2O3≥ 99.92 3%, ≥ 3.10FE203≤ 0.799 Refractory calcined alumina powder (a-Al2O3) 1.2 true density (g & # 47, by fully ground powder made of different fineness .O.10 0.07 0.04NA2O≤ 0.93a-Al2O3 (%) ≥ 95 95 primary crystallization average grain (um) 2 ~ 3 3 ~ 5 average particle size (um) 40 ~ 602.6SIO2≤ 0.1 0.15B2O3≤ - 0, glass, engineering ceramics typical use electronic ceramic insulating ceramic refractory ceramic wear 3
Q:which kind of refractory is commonly used in the industry
Therefore it is known as special fire-resistant materials, such as yttria, high alumina raw material (sometimes neutral), olivine,which is used for alkalinity furnace, dolomite, and we roughly divided into several categories, beryllia, cerium oxide, these materials have a strong alkaline slag resistance, thorium oxide, lime, serpentine, which is picked from these refractory raw materials. the raw materials of basic refractory materials are mainly magnesia clay and titanium oxide, but because not many sources of raw materials, it can not be widely applied in the refractory industry, and we can analyze which kind of materal is processed by the pulverizer. There are many kinds of refractory materials, rotary kiln can only be used in particular circumstances. These materials have a variety of slag resistance at different degrees. the main material of special refractories is zirconium oxide. the refractory clay is the most basic and most widely used raw material in the refractory industry.
Q:How to distinguish between class A fire resistant door and class B fire resistant door from appearance ? What are the differences between the two refractories? Thank you !
First, the materials are the same. But the thickness of grade A and grade B fire doors is different juding from their appearances. Grade A :50. Grade B:45. Added question: Do you refer to steel fire door?
Q:How long does it take for refractory cement to solidify?
1. First you should be aware of the concepts of condensation and condesation time. Refractory cement belongs unshaped refractories, which when added water or liquid binding agent to mix, the agitation material will gradually lose thixotropy or plasticity and become in a state of solidification, thus is solidified. The time needed to finish the process is called solidification time. The whole process is divided into initial and final set. When beginning to lose plasticity called the initial setting, when called plasticity completely lost the final setting. 2. For refractory cement, the solidification time depends on the matching of the material and the parts and using methods. Under normal circumstances, in order to meet the requirements of time of construction, the initial set time should be no shorter than 40min, and the final set time should be no longer than 8H 3. There are also some exceptions. When refractory cement is used for spraying and injection operation together with other refractory castable, the set time is required as short as possible, sometimes flash set is required to prevent the occurrence of peeling or collapse of the spraying layer.
Q:Does anyone know the fire endurance of steel stud partition?
Indeed ① Dragon Brand gypsum board fire-resistant partition: Its fireproofing extreme time is 4 hours, suitable for firewalls of a variety of public buildings, public exit passageway and other partitions, which meets the first level of fire protection standard ② fireproofing and pressure-resistant partition: Refers to the partition which can withstand momentary gas shocks of over 1200pa , mianly used for the room partition with inert gas fire-fighting needs, such as equipment rooms. The pressure-resistant degree of fireproofing and pressure-resistant partition of Beixin Building Materials can be up to 4800Pa, especially suitable for high-rise fireproofing.
Q:What is the criterion of entry of refractory clay industry?
Chemical composition of refractory clay is one of the important factors affecting its quality. Al2O3 is the beneficial part of refractory clay, and it mainly exists in aluminum hydroxide minerals (diaspore, boehmite, gibbsite), and it also exists in aluminosilicate minerals (kaolinite, illite montmorillonite, etc.). In general, the content of Al2O3 in soft and semi-soft clay is 30% to 45%, the hard clay is 35% to 50%, and high alumina clay 55% to 70%. Fe2O3 mainly exists in hematite, magnetite, goethite and siderite, and is the main harmful component of refractory clay. There is no evident law on the content of Fe2O3. The content in high alumina clay is 0.5% to 2.2%, hard clay is 0.5% to 2.5%, and the soft clay is generally 1.0% to 2.5%. K2O and Na2O are harmful impurities in refractory clay, which mainly exist in illite and mica and other minerals, and the content varies greatly. CaO and MgO, etc., although they are harmful impurities, but the content is generally small.
Q:Which kind of refractory does insulation board belong to ?
Q:What is fireproofing material? Are fireproof materials the same thing with thermal insulation materials and refractories?
Insulation materials. Thermal insulation material is characterized by thermal insulation, which is one of the four traditional inorganic nonmetallic materials. Fire retardant material is cahracterized by heat-resistant. Refractory is a kind of materials of resisit high temperature. Fireproof material, which is different from thermal insulation material and refractory, is a synthetic material with some fireproof subtrate added. It is essentially resistant to high temperature.

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