Molybdenum powder producing process

Because it can help understand the operation, the investors want to know the informations about molybdenum powder production process.
By comparing three kinds of experimental and theoretical techniques of the program, developed by the ammonium molybdenum powder to produce a better performance of high technology programs, and determine the average size of 3.3 ¯ 3.8μm vertical molybdenum powder in the melting and drawing processes for better performance.

A high bulk density of molybdenum powder preparation methods
The present invention discloses a high bulk density of molybdenum powder preparation method, preparation is the process of purification of ordinary molybdenum powder dry nitrogen for fluidized bed jet mill processing; the processed online screening grade molybdenum powder ; on the classification of molybdenum powder mixing together batches, testing packaging for the finished product molybdenum powder. The invention process is simple, highly automated operation, low production costs, product consistency, and easy to achieve industrialization; The method is carried out by ordinary molybdenum powder treatment of Bed-type jet mill to improve the bulk density of molybdenum powder, molybdenum powder particles to improve the agglomeration.Meanwhile reducing the loading of molybdenum powder produced by the mold, "arch" effect, which will help molybdenum powder pressing; molybdenum powder prepared by this method applies to a much wider range of electronics, environmental protection in the automotive industry has a wide range of applications, especially in the environmentally friendly vehicles Mo copper alloy heat sink area more potential.
Ultra-fine copper coated molybdenum powder or ultrafine tungsten powder
The present invention relates to a ultra-fine copper coated molybdenum powder or ultrafine tungsten powder, pre-coated molybdenum powder or ultra fine tungsten powder average particle size D50 of not more than 1.3μm, the average thickness of copper coating not more than 300nm, the surface of copper clad rate of not less than 50%;The actual needs of the tungsten can be copper, molybdenum-copper ratio, mixed with the copper machinery, isostatic pressing, sintering the copper-coated ultrafine tungsten powder, molybdenum powder superfine copper surface could be infiltrating theCompact structure can be prepared, homogeneous molybdenum copper, tungsten copper materials, to meet the heat sink material, electric vacuum material requirements.

A fine powder or molybdenum coated fine tungsten powder preparation method of copper
A fine or ultrafine tungsten molybdenum powder coated copper powder preparation methods, are new materials. The average particle size D50 mainly ultra-fine of not more than 1.3μm tungsten molybdenum powder or fine powder, stirring constantly, and Cu2 + mixture of soluble salt solution, add with N, O atoms of the coordination polymer surface groups active agent, adding hydrazine hydrate, sodium dithionite, or sodium hypophosphite as a reducing agent, Dropping the right amount of base regulation during the pH, the reaction system between pH 5.5 ~ 12.0, in the range of 20 ~ 95 ℃, the reaction from 0.5 to 3 hours; filtered dilute solution of NH4Cl or NH4NO3 washing the powder with 0.2 3.0% solution of fatty alcohol beating again filtered through H2 heating and drying the powder, you can even prepare the surface of ultrafine tungsten coated copper powder, ultra-fine molybdenum powder. By adjusting the fine molybdenum powder or ultrafine tungsten powder and the proportion of soluble salts of copper, the proportion of different composition can be prepared by copper molybdenum powder coated ultra-fine, ultra-fine tungsten powder to meet different needs.

Preparation of high purity and ultrafine a method of molybdenum powder
The present invention discloses a preparation of high purity ultrafine metal molybdenum powder method, the process steps are: (1) Preparation of molybdenite ore into a ball or block; drying of pellets; then dried pellets into the high-temperature vacuum furnace vacuum breakdown, access to non-ferrous metal impurities and low S content of molybdenum powder; (2) the above steps to obtain the spherical molybdenum powder into the roasting device, for roasting, get high-temperature gas MoO3; (3) high temperature gas into the gas MoO3 reduction device, using hydrogen as a reducing agent, reduction of gaseous MoO3, get high purity ultrafine metal molybdenum powder. Of the present invention without SO2 emissions and recycling issues, and while taking advantage of two resources of molybdenum and sulfur, molybdenum roasting to avoid the release of SO2 by the burden of comprehensive treatment and related emissions, not only reduces emissions but also improves the overall efficiency of resources.

Preparation of a special method of molybdenum powder
Preparation of molybdenum powder, one kind of special way, relates to a preparation for thermal spraying, and precision machining industry-specific special devices to suppress the methods of molybdenum powder. Characterized by the steps in its preparation include: (1) conventional sintering molybdenum powder, increasing the grain size; (2) increase the size of molybdenum powder grade, molybdenum powder with a particle size similar to the ball of plasma processing equipment, cooling collection; (3) After the ball of the reduction of molybdenum powder, sifted special grade molybdenum powder was obtained. Prepared by the present invention molybdenum powder fluidity, simple process, high yield, for thermal spraying, precision devices to suppress the special areas such as preparation of molybdenum powder.

Preparation of molybdenum powder, one kind of method of hypokalemia
Preparation of the present invention relates to a method of low potassium molybdenum powder, characterized in that potassium content less than 160ppm by two molybdenum oxide as raw material, after screening by the Sec hydrogen reduction, vacuum breaking ball, potassium obtained by screening molybdenum powder. Method of the present invention, low demand for raw materials, easy to get; production process easy to control, simple, safe, reliable and suitable for mass production; particle size distribution, consistency; Molybdenum powder and ordinary compared to products from the present invention can be controlled within 20ppm of potassium containing less carbon content can be controlled within 20ppm below 600ppm oxygen content can be controlled in the following. Size can be controlled in 3 ~ 7μm, bulk density can be controlled within 1.4 ~ 2.8g/cm3, tap density can be controlled within 3.5 ~ 4.5g/cm3. Products in the electronic processing of the present invention has wide application in the industry, especially in the LCD monitor more potential target areas.

A high bulk density powder low oxygen content of the preparation of molybdenum powder
A high oxygen content of powder bulk density of molybdenum powder preparation method, involving a vacuum and powder milling processing methods to improve control of bulk density and oxygen content of molybdenum powder method. Preparation process is characterized in its Molybdenum powder is the raw material in the vacuum in the ball milling; on the ball a good rating after the screening of molybdenum powder molybdenum powder products; Preparation of the molybdenum powder in a vacuum mixer together within the batch mixing; Finally, the molybdenum powder prepared by vacuum packaging. Method of the present invention, the lower raw material requirements of molybdenum powder, production process easy to control, simple, safe, reliable and suitable for mass production, mining and milling screening vacuum protection, process stability and product consistency. And ordinary compared to the conventional molybdenum powder, prepared by the present invention molybdenum powder bulk density can be greater than 1.5g/cm3, can be greatly improved molybdenum powder bulk density, increase its loading capacity.

Purification of a molybdenum powder
Purification of a molybdenum powder, relates to a method of Preparation of high purity aluminum. Characterized in its purification process includes: (1) take ordinary molybdenum powder as raw material; (2) raw materials of molybdenum powder by washing or acid impurity; (3) after acid washing or drying of molybdenum powder; (4) protection of high temperature hydrogen or vacuum high-temperature impurity impurity; (5) screening by the vacuum system molybdenum powder was purified. Method of the present invention can not only reduce the impurity content of molybdenum powder, molybdenum powder can improve the appearance, size, bulk density and other physical properties. Obtained in the molybdenum powder molybdenum powder and the ordinary compared to products with high purity, wide application in the electronic processing industry has a wide range of applications, especially in the LCD monitor more potential target areas.