Refractory Material/ Zircon Sand and Zircon Flour/ Powder

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Refractory Material/ Zircon Sand and Zircon Flour/ Powder

1.Structure of Zircon Sand and Zircon Powder

Zircon Sand, also known as Zircon, is a Chemical Compound, a Silicate of Zirconium, andits corresponding Chemical Formula is ZrSiO4. It occurs in nature as the Zircon, a Silicate Mineral. Ore is mined from natural deposits and concentrated by various techniques. It is separated from sand by Electrostatic and Electromagnetic methods. It can be made by fusion of SiO2 and ZrO2 in an arc furnace. It is usually colorless, but impurities induce various colorations. It is a fine white mineral powder that is chemically inert and stable.It is insoluble in water, acids, alkali and aqua regia. The tiny, round, solid ball shape of Zircon Sand provides a greater surface area for improved performance and dispersion in its application. It is also sometimes known as Zircon Flour, Zircon Powder, or Zirconium Silicon Oxide. Zircon is the generic name for Zirconium Silicate; the trade names are different (for example, Zircopax, Zircosil). It is used as an ingredient for its functional properties in several Industries.

2.Main Features of Zircon Sand and Zircon Powder

1 Tiny, round, solid ball shape provides greater surface area for improved performance and dispersion in its application

2 High refractory rating, lower specific gravity rating, and higher service temperature produces greater yield

3 With lower bulk density, it offers better air permeability for better performance as a result of its overall physical characteristics

 

3.Main usage of Zircon Sand and Zircon Powder

  • Ceramic Industries – Wall Tiles , Floor Tiles , Roofing Tiles

  • Sanitary Ware Industries

  • Pottery Industries

  • Porcelain Glazes

  • Frit for Glaze and Enamels

  • Ceramic Colour Industries

  • Admixture for Glass , Opal Glass

  • Picture Tube Industries

  • Foundries , Investment Casting Industries

  • Special Refractories , Castable Refractories

  • Zircon Bricks , Zirconium Oxide Industries

  • Epoxy Resin , Special Paints Industries

4. Zircon Sand and Zircon Powder Images

 

Refractory Material/ Zircon Sand and Zircon Flour/ Powder

Refractory Material/ Zircon Sand and Zircon Flour/ Powder

Refractory Material/ Zircon Sand and Zircon Flour/ Powder


5. Zircon Sand and Zircon Powder Specification

Specific gravity

4.7

Bulk density

170 – 180 lb/ft³ (2700 kg/m³)

Hardness

7.5 Mohs

Angle of repose

30°

Melting point

4000° F (2200° C)

Thermal stability

no change to 3090° F (1700°C)

Loss on ignition

0.02 – 0.12%

6.FAQ of Zircon Sand and Zircon Powder 

1). Q: Are you a factory or trading company?

A: We are a factory.

2). Q: Where is your factory located? How can I visit there?

A: Our factory is located in China. You are warmly welcomed to visit us!

3). Q: How can I get some samples?

A: Please contact me for samples

 


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Q:Why do magnesium oxide refractory bricks can be made into refractories?
Because the magnesium oxide, commonly known as magnesia, which is a basic oxide, with the common property of alkali oxides and belongs to the cementitious material . It is white or light yellow powder, odorless, tasteless, non-toxic and a typical of alkaline earth metal oxide, whose chemical formula is MgO. It is white powder, with melting point of 2852 ℃, boiling point of 3600 ℃ and relative density of 3.58 (25 ℃). The magnesium oxide that is soluble in acid and ammonium hydroxide solution has high insulation properity. After high temperature of above 1000 ℃ burning, it will transform into crystals, and when rising above 1500 ℃ , it will turn into dead-burned magnesium oxide (also known as the magnesia) or sintered magnesia. So the performance of magnesium oxide refractory bricks is good, and the fire resistance of it is very strong.
Q:What are the materials of white firebricks?
White refractory materials are generally divided into two types, namely, unshaped refractory materials and shaped refractory materials. Unshaped refractory materials, also called castables, is a mix of powdery particles of many aggregates and one or multiple adhesives. They must be stirred well with one or multiple liquids when in use, which has a strong liquidity. Unshaped refractory materials generally refers to firebricks. They have standard rules about their shapes and can also be processed temporarily as needed.
Q:What refractories have good mechanical property resistance and heat expansion and cold contraction property?
Explain that where you use it for and what requirements you have. Follow-up: I use it in metallurgical furnaces with the features of strong stirring and acidic residue.
Q:How long is the fire endurance of the rock wool board?
Some time ago we did an experiment, the result is no change in the burning 30 minutes. The following is the picture of rock wool after the test .
Q:how to divided the external wall thermal insulation materials fire rating
Level A: Incombustible building material: It is a kind of material that almost does not occur burning. Level B1: Nonflammable building material: Non-flame material has good flame resistance. It is difficult to fire under the condition of open fire in the air or high temperature, and it is not easy to quickly spread, and when the combustion source is removed, the combustion will stop immediately. Level B2: Combustible building materials: Flame material has a good flame resistance. In case of fire in the air or at high temperature, it will immediately burst into flames, and easily lead to the spread of fire, such as wooden column, timber roof truss, timber beam and wooden stairs. Level B3: Combustible building materials: It has no any flame resisting effects, and is easy to burn, so the fire risk is high.
Q:What are the components of refractory clay?
It is different from non-cement castable refractories, which does not rely on the addition of cement for combination, instead it uses chemical binder. It is refractory castable (also known as chemical bonding castable). Non-cement refractory castable takes oxide or synthetic compound ultra-fine powder or oxide sol-gel which is similar to the chemical composition of material in tungsten castable. Since the use of superfine powder or sol as binder, it has low impurity content, and therefore the refractoriness and slag erosion resistance of the castable will not be reduced. Besides, the self combination in use can help to improve high-temperature structural strength. Non-cement castable refractory is made up of refractory aggregate and powder, superfine powder of oxide or sol, trace amount of dispergator (or anti-coagulant) and proper slow acting hardener. Non-cement castable is mainly coagulated and combinated by ultrafine powder of oxide or sol, therefore, it has certain requirements for ultrafine and sol. Ultrafine powder used refers to less than 1 / zm particles. Ultrafine powder used in non-cement castables are SiO2, Al2O3, Cr2zrOz, etc. SiO micro powder is often adopted, which is the dust recycled during the smelting of metallic silicon, ferro-silicon alloy, the generation process is as follows: This recycled SiO2 powder has an average particle diameter of 0.5 pM, and it is spherical with large surface area. It is amorphous substance with high activity, so it has good bonding strength. The sol used are mainly alumina oxide and silica sol. Silica sol is made by ion exchange of sodium silicate after Na ions are removed. It can also be made after hydrolysis of ethyl silicate. There are several ways of preparing alumina sol, the easiest method is to prepare by the reaction of metallic aluminum or alchlor with hydrochloric acid.
Q:How is grade of fire endurance divided?
Fire resistance level is mainly decided according to the importance and function of the building. For example, very important buildings are set as the first level, and the less important is the second level, and so on.
Q:The effect of a high content of water in liquid resin exerted on refractory material?
For one thing, Substandard whiteness, transportation, low quality and the storage of refractory material may account for this. For another, a high content of moisture reduced the performance of refractory material. A high content of moisture is equal to buy water with same money in terms of trade settlement. Based on this, we can’t consider the super-standard water content from a single aspect, because the water content in refractory material is definitely super-standard, and another problem is particle size. Many people hold the idea that excessive amount of water content may revive its original performance, but it tends to have influenced the quality of refractory material.
Q:What problems should be paid attention to while using refractory materials under a controlled atmosphere?
Pay attention to the performance of the materials, and the use of non oxide materials!
Q:Does anyone know the refractory temperature of fire-resistant glass?
Ordinary glass will burst under sharp temperature difference of about 70-120 degrees and toughened glass of 200 degrees. It is not yet clear for the bursting temperature differences of the refractory glass. If the overall glass is heated evenly, it will have no significant change below 600 degrees, and it will deform with the increase of temperature until melting. The fire-resistant time of the glass you said is the time to heat the glass into the extreme temperature differences it can endure, which should not be more than 10 minutes

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