Talk More about the Loss On Lgnition

In magnesium oxide specifications, there are six commonly used physical and chemical indicators. Loss on lgnition is one of it, which has several features that other specifications like silicon, calcium, iron, aluminum cannot be compared.

The first, controllability. That is to say, after mineral being put into the furnace, we can adjust the content of it by control the calcination of calorific value and the sintering time. Therefore, you can more easily to control magnesium oxide products required different by ignition loss.

The second, the relationship with the ratio of magnesium oxide. The content of silicon, calcium, iron, aluminum are determined by ore, loss on lgnition is different from it, and inversely proportional to the content of MGO. For example, the kind of magnesium oxide 93%, that is meaning, the content of loss on lgnition is 7%, then directly calculate the magnesium oxide content is 86%. If the content of loss on lgnition increased 2% by storage or other reasons, the content of magnesium must fall off 2%.

The third, the coagulation time of magnesium oxide products. Under certain conditions, the coagulation time of magnesium oxide is particularly fast, sometimes it is opposite, even appear not-solidification phenomenon. In this case, you can look for reasons from two aspects, the one is operating temperature, the other one is loss on lgnition.

In conclusion, the higher content of loss on lgnition of magnesium oxide, the faster solidification rate.

Magnesium Oxide Classification and Export

Generally speaking, magnesium oxide can be divided into light magnesium oxide and heavy magnesium oxide. And heavy magnesium oxide also can be divided into Light burned and Hard burned MgO. Such as when used for Building materials, it almost is light burned magnesium oxide. The biggest difference between the Light burned and Hard burned MgO is calcined temperature. Light burned MgO must be calcined at temperatures below 1200ºC, otherwise calcined temperatures above 1200ºC is called hard burned MgO.

As for the content of MgO below 70%, the country will only charge 5% of the tariff, without restricting exports. But magnesium oxide suppliers need supply testing qualified report with the Customs, which are submitted by commodity inspection center. The customs inspection rate is very high when magnesium oxide export use more than one voyage. Generally above 4 cases of magnesium oxide, inspection rate can reach above 80%.

The concrete operation process: bring the cases to inspection site, then prepare the information note and instructions of magnesium oxide, make an appointment with Customs to inspect and take samples. After inspection personnel taking the sample, then transferred to the customs laboratory to retest the content. According to related rules, customs laboratory test center need to complete within 10 working days, so you should wait patiently.

MgO High Temperature Performance

MgO melting point of 2852 ℃, boiling point of 3600 ℃, So magnesium oxide high temperature performance is very excellent, that is the reasons many produce high temperature product customers like.

In terms of friction material industry, MgO have the requirement of good fineness, dispersibility, big volume, low content of silicon dioxide, hydrochloric acid insolubles, screenings, etc. It can effectively increase the coefficient of friction, flexibility, high temperature resistant, wear resistant performance, even more, it can solve the quality problems of unqualified friction coefficient and brake noise in the production.

In terms of silicon steel materials industry, we use Japanese technology and pollution-free area of Qinghai as raw material powder, product quality has good stability. After ultrafine grinding, classification treatment, MgO content is high, lower content of impurities such as hydrochloric acid insolubles, chloride, iron, evenly distuibuted sizes, small span, reasonable crystal structure, fineness and moderate viscosity are moderate, good physical indicators, low hydration rate. We can solve the issues of high-temperature plate can not be used, bad insulation properties, low yield and so on.

Hebei Meishen Chemical Technology Co.,LTD have good after-sales service, constantly updated product quality and ensure delivery time, and offer free samples. In addition, we can meet the special needs of various customers according to different requirements.

Analytical Reagent (AR) Magnesium Oxide

    AR is a kind of purity specifications of chemical reagent, belongs to the second quality product. It has high purity, less impurity, and is used in general analytical tests and chemical experiments. 

    The so called analytically pure grade is means the purity grade of reagents. That is to say, there is a difference between content and purity. However, reagents always used bottled package, 500 g/bottle. Analytically pure is a kind of reagent which is used for doing the analysis and determination, has less impurity, and don't interfere with the test. Compared with analytically pure, chemical reagent is used in the general chemistry experiment. In totally, they have different requirements for different uses.

    As for the analytical reagent (AR) magnesium oxide, it is often used in high-end industries like special ceramics and so on. Of course, there is a strict demand for producing. Hebei Meishen Chemical Technology Group Co.,LTD is focus on manufacturing high-end grade magnesium oxide, which has high purity, less impurity, and good stability. Our products can reach the industry production standard and quality standard. You can choose us without any concerns. 

USP Grade Magnesium Oxide

    USP grade means the pharmacopoeia certification of United States. In the same way, CP grade means the pharmacopoeia certification of China, EP grade means the pharmacopoeia certification of European, BP grade means the pharmacopoeia certification of British. 

    “MEISHEN” brand magnesium oxide for medicine is produced by the newest production equipment and technology. With the characteristics of high content of magnesium oxide and low content of impurities, it has passed national medical qualification certification, and plays a important role in neutralizing alkalescence and increasing the content of magnesium ion. The specifications of medicinal grade magnesium oxide are: MgO≥96.5%, CaO≤0.5%, insolubles in acid≤0.1%, Apparent specific volume≥3.5ml/g, Fe≤0.02%, As≤0.0005%, Heavy metals≤40ppm, Screenings ≤0.01%. It can be seen easily that the heavy metals, arsenic salt, manganese salt’s content are far better than the national standard, to reach the United States and Europe pharmacopoeia standard, which can be customized and will meet all demands of customers.

    Hebei Meishen Chemical Technology Group is one of the largest pharmaceutical grade, food grade magnesium oxide, heavy magnesium carbonate and magnesium sulfate production base in the world. As we all known, different industries need different content of magnesium oxide. We are committed to solve all problems in your making use of magnesium oxide. Welcome to consult us at any time.    

Magnesium Oxide Used as Acid Acceptor of Fluorine Rubber

Acid acceptor is also called absorbent or acid-binding agent. It is a kind of material that can efficiently neutralize hydrogen fluoride precipitated in the process of fluorine rubber vulcanization. Acid acceptor can also increase the crosslink density of the fluorine rubber, and make cross-linked rubber good thermal stability, so it is also used as activator or heat stabilizer.    

Magnesium oxide and zinc oxide are generally used as acid acceptor. When used zinc oxide, often used with equal number of dibasic lead phosphite for water resistance rubber. However, magnesium oxide is used for rubber which has heat-resisting and no requirements for acid resistance. A mixture of active magnesium oxide and calcium hydroxide is used as acid acceptor in Viton E －60c. Then you can use the rubber of bisphenol AF and BTPPCl to make cross-linked rubber.

Magnesium oxide and zinc oxide have more functions in your production, including acid absorbing agent, curing agent, active agent and others. If you want to know more information about magnesium oxide, or want to solve you production problems, or want to exchange magnesium oxide and zinc oxide suppliers before, you can leave a massage for us or call our telephone number directly.