Question 1

Magnesium Oxide Raw Material - Magnesite Ore Mine

Accepted Answer

Magnesium Oxide Raw MaterialThe raw material of Magnesium Oxide is Magnesite Ore Mine.

Question 2

What kind of magnesium oxide do you have?

Accepted Answer

We can provide following type of magnesium oxide:Light Calcined Magnesia Light Calxined Magnesium BallHigh-Purity Magnesite Dead Burned MagnesiteFused MagnesiteLarge Ctystal Fused Magnesite

Question 3

Fused Magnesia

Accepted Answer

Do you have Fused Magnesia?Yes, We have Fused Magnesia Powder and Granular. The size can be customized.

Question 4

Magnesium Oxide

Accepted Answer

Do you have Magnesium Oxide Disintegration Granular?Yes, we have MgO 60% 65% disintegration granular.

Question 5

What size can you provide for Dead Burned Magnesite?

Accepted Answer

We can provide size of DBM is 200/325 mesh powder and 0-1/1-3/3-5/5-15/1-15/10-30mm.

Question 6

HS Code of Magnesium Oxide

Accepted Answer

What is the HS Code of Magnesium Oxide?Please check below.Caustic Calcined Magnesite:25199030Dead Burned Magnesite: 25199020Fused Magnesia: 25199010

Question 7

What is your unit packing weight?

Accepted Answer

50kg with PE bag or as your request.

Question 8

The size of Dead Burned Magnesite can be customized.

Accepted Answer

What is the size for Dead Burned Magnesite? Can it be customized？Yes, the size can be customized.We can offer 325mesh, 0-1mm, 1-5mm, 4-8mm, 0-30mm and as well as customized sized.

Question 9

Can you produce magnesium oxide according to the customer's specifications?

Accepted Answer

Yes, We provide professional service according to formular and your application, Customer tailored Spec is avaliable.

Question 10

The raw material of Magnesium Oxide is Magnesite.

Accepted Answer

What is the raw material of Magnesium Oxide?The raw material of Magnesium Oxide is Magnesite. Please find the picture below for your reference.

Question 11

Can you provide free samples?

Accepted Answer

Of cause, we are glad to provide samples for free, but the freight is borne by the customer.

Question 12

China annual domestic output of magnesium oxide is about 12 million tons.

Accepted Answer

China annual domestic output of magnesium oxide is about 12 million tons.One of the main uses of magnesium oxide is as a flame retardant, a traditional flame retardant material, a flame retardant mixture of halogen-containing polymers or halogen-containing flame retardants. However, in the event of a fire, a large amount of smoke and toxic corrosive gases are generated due to thermal decomposition and combustion, which hinders fire fighting and personnel evacuation and corrosion of instruments and equipment. In particular, it has been found that more than 80% of fatal accidents in fires are caused by heavy smoke and toxic gases produced by materials. Therefore, in addition to flame retardant efficiency, low smoke and low toxicity are also essential indicators of flame retardants. The development of China's flame retardant industry is extremely unbalanced, and the proportion of chlorine-based flame retardants is heavier. It is the first of all flame retardants, and chlorinated paraffin has a monopoly position. However, chlorine-based flame retardants release toxic gases when they act, which is far from the non-toxic and efficient pursuit of modern life. Therefore, in order to comply with the development trend of low smoke, low toxicity and pollution-free of the world's flame retardants, the development, production and application of magnesium oxide flame retardants are imperative.

Question 13

How do you control the products quality?

Accepted Answer

We control the quality through monitoring step by step. (1)We control the quality of raw material. (2) Each shift choose some samples to test quality. (3) Our technicians test each lot cargo before they leave factory. (4)There will be specialist supervise loading. (5)We will optionally choose some lot cargo to test quanlity by third party. (6) You can ask for preshipment inspection by third party when loading.

Question 14

Caustic Calcined Magnesite

Accepted Answer

Caustic Calcined MagnesitePlease check below specification for your reference.

Question 15

dead burned magesia size

Accepted Answer

We can provide complete size to meet our customer's needs for different applications. Such as 0-1mm,1-3mm,3-5mm,5-15mm,1-15mm,200mesh or according to customer's requirements.Please feel free to contact with us for an accurate best quotation!

Question 16

Magensium Oxide is the raw marterial for Magnesium Sulpahte

Accepted Answer

Magnesium OxideCaustic Calcined Magnesite MgO:85% and 90% are the raw material for making Magnesium Sulphate.Please check below specification for your reference.Caustic Calcined MagnesiteItemSpecificationMgO85%min90%minCaO4.0%max3.0%maxSiO28.5%max5.0%maxFe2O31.0%max1.0%maxAl2O31.0%max1.0%maxLOI7.0%max4.0%maxSize200mesh

Question 17

We can make the package according to customers' requirment.

Accepted Answer

Please find below our 50KG package.

Question 18

How to produce caustic calcined magnesite

Accepted Answer

Magnesite is Calcined at different temperatures produces magnesium oxide of different reactivity. High temperatures (1500 – 2000 °C) diminish the available surface area and produces dead-burned (often called dead burnt) magnesia, an unreactive form used as a refractory. Calcining temperatures (1000 – 1500 °C) produces hard-burned magnesia, which has limited reactivity and calcining at lower temperature, (700 – 1000 °C) produces light-burned magnesia, a reactive form, also known as caustic calcined magnesia. Although some decomposition of the carbonate to oxide occurs at temperatures below 700 °C, the resulting material appears to reabsorb carbon dioxide from the air.

Question 19

Magnesium Oxide package problem.

Accepted Answer

What`s your packing problem for Magnesium Oxide?We have all kinds of packing for you to choose, and can be customized packaging.Conventional packing：25KG、50KG、500kg、1000KG、1250kg bag

Question 20

Accepted Answer

Yes, it is.Magnesium oxide is a popular drying agent. In powder form, it is hygroscopic in nature, meaning that it attracts water molecules to itself from its surrounding environment. In doing this, the magnesium oxide will pull those molecules away from other things, keeping them dry.Libraries and other large book and paper storage facilities will often use powdered magnesium oxide to help preserve paper. Rock climbers often use magnesium oxide as a way to reduce moisture from perspiration on their hands and handheld equipment, though other mineral powders are also used for this purpose.

Question 21

Accepted Answer

Yes, it is.Magnesium oxide is used as a refractory agent in the construction of crucibles. A crucible is a container which is intended to be placed in extremely high temperatures for the sake of heating its contents. Since the crucible itself must not be affected by the heat, it must be made with substances which retain their properties at high heat. Magnesium oxide is such a substance, so it is used in this manner.

Question 22

Accepted Answer

Magnesium Oxide is used as a supplement for magnesium deficient soils especially for crops, fruits and grass.

Question 23

Accepted Answer

Yes, it has.Magnesium Oxide is the source of magnesium for nutrition. It has an important place as a commercial plant fertilizer and as animal feed.

Question 24

Accepted Answer

Yes, it has.Magnesium Oxide can be used in water treatment and soil remediation.

Question 25

Accepted Answer

Yes, Magnesium Oxide can be used in various industrial processed as PH modifier and precipitant. It also has a myriad of applications as a filler, desiccant, absorbent and flocculent.

Question 26

Accepted Answer

Yes, it is.Magnesium oxide is used extensively in the soil and groundwaterremediation, wastewater treatment, drinking water treatment, air emissionstreatment, and waste treatment industries for its acid buffering capacity andrelated effectiveness in stabilizing dissolved heavy metal species.Many heavy metals species, such as lead and cadmium are mostsoluble in water at acidic pH (below 6) as well as high pH (above 11).Solubility of metals affects bioavailability of the species and mobility soiland groundwater systems. Most metal species are toxic to humans at certainconcentrations, therefore it is imperative to minimize metal bioavailabilityand mobility.

Question 27

Accepted Answer

Yes, it is.     It is used extensively as an electricalinsulator in tubular construction heating elements. There are several meshsizes available and most commonly used ones are 40 and 80 mesh per the AmericanFoundry Society. The extensive use is due to its high dielectric strength andaverage thermal conductivity. MgO is usually crushed and compacted with minimalairgaps or voids. The electrical heating industry also experimented withaluminium oxide, but it is not used anymore.    It is also used as an insulator inheat-resistant electrical cable.

Question 28

Accepted Answer

MgO is prized as a refractory material,i.e. a solid that is physically and chemically stable at high temperatures. Ithas two useful attributes: high thermal conductivity and low electricalconductivity. "By far the largest consumer of magnesia worldwide is therefractory industry, which consumed about 56 % of the magnesia in the UnitedStates in 2004, the remaining 44 % being used in agricultural, chemical,construction, environmental, and other industrial applications." MgO isused as a basic refractory material for crucibles.     It is a principal fireproofing ingredientin construction materials. As a construction material, magnesium oxidewallboards have several attractive characteristics: fire resistance, termiteresistance, moisture resistance, mold and mildew resistance, and strength.

Question 29

Accepted Answer

Magnesium oxide (MgO), or magnesia, is awhite hygroscopic solid mineral that occurs naturally as periclase and is asource of magnesium (see also oxide). It has an empirical formula of MgO andconsists of a lattice of Mg2+ ions and O2− ions held together by ionic bonding.Magnesium hydroxide forms in the presence of water (MgO + H2O → Mg(OH)2),but it can be reversed by heating it to separate moisture.    Calcining at different temperaturesproduces magnesium oxide of different reactivity. High temperatures 1500 – 2000°C diminish the available surface area and produces dead-burned (often calleddead burnt) magnesia, an unreactive form used as a refractory. Calciningtemperatures 1000 – 1500 °C produce hard-burned magnesia, which has limitedreactivity and calcining at lower temperature, (700–1000 °C) produceslight-burned magnesia, a reactive form, also known as caustic calcinedmagnesia. Although some decomposition of the carbonate to oxide occurs attemperatures below 700 °C, the resulting materials appears to reabsorb carbondioxide from the air.

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