Tunnel Microwave Lithium Cobalt Oxide Sintering Machine

Cobalt oxide The name of a chemical, usually a gray powder, sometimes a greenish brown crystal. It is mainly used as a raw material for the preparation of metal cobalt. The prepared metal cobalt is used for the production of tungsten-cobalt cemented carbide, cobalt magnetic alloy, and the cathode material which is continuously oxidized to make cobalt trioxide as a cobalt lithium battery, and is used as a catalyst in the chemical industry. Used as a coloring agent for glass, enamel, ceramics, magnetic materials, adhesives, sky blue, cobalt blue, cobalt green, etc., livestock trace element nutrient

There are three types of cobalt oxides: cobalt oxide (CoO), cobalt trioxide (Co304), and cobalt oxide (Co203). Cobalt oxide is a low-oxide oxide of cobalt, which is grayish green, brown, pink, and dark gray due to differences in process and purity. The theoretical cobalt content of cobalt oxide is 78.65%, the oxygen content is 21.35%, and the melting point is 1935 ° C density 5.7 to 6.79 / cm 3 . The CoO crystal is a face centered cubic with a lattice constant a = 4.24 x 10 - 10 m. The gray-green CoO powder tends to turn brown in air, and the pink CoO powder is relatively stable in air, and does not generate high-valent oxides even when left for a long time. The cobalt in the cobalt oxide can be dissociated from oxygen at a high temperature, and the decompression pressure at 1000 ° C is 3.36 x 10-12 atmospheres. Cobalt oxide is easily reduced to elemental cobalt by H2, C or Co under heating. Cobalt oxide is soluble in acids and alkalis and insoluble in water, alcohol and ammonia. A variety of pigments can be prepared by reacting cobalt oxide with silica, alumina or zinc oxide at elevated temperatures.

Product Details

Supply Ability: 100 Set/Sets per Month Urgent order inform us in advance

Packaging Details Inside: plastic bag.
Outside: wooden case (adopt the wooden case or wooden pellets depended on clients' requirement).

The continuous powder material microwave sintering furnace comprises a feeding mechanism, a microwave source, a transition waveguide, a furnace body, a furnace, a discharging mechanism, a heat insulating layer, a temperature measuring instrument and a microwave auxiliary absorbing material, wherein the furnace is up and down The small cone-shaped structure is provided with a ribbon-type cone stirrer connected to the transmission mechanism; the feeding mechanism is a screw feeding mechanism, the discharging mechanism is a water-cooled screw discharging mechanism; a set of microwave source and a plurality of The set of transition waveguides is arranged around the furnace; at least one set of inlet and exhaust ports are provided with stainless steel microporous filter devices; the furnace is provided with an observation port of an infrared thermometer; the furnace is made of ceramic material, ribbon cone The shape agitator is a steel structure surface lining ceramic material or stainless steel material; the utility model has the advantages of simple structure, low cost, no need for a boat, health, environmental protection and high efficiency, and is suitable for microwave sintering of various polar powder materials.

Equipment Parameters:

Zirconium oxide is a very important structural and functional material with excellent physical and chemical properties, such as high melting point (2700 ° C) and high boiling point, small thermal conductivity, large thermal expansion coefficient, high temperature resistance and wear resistance, and corrosion resistance. Excellent performance, etc. The preparation of nano-ceramics consists of three basic steps: powder preparation, forming and sintering. The key to preparing high-quality zirconia ceramic materials is to prepare ZrO2 powder with good performance. Therefore, how to prepare high-purity and high-dispersion nano-ZrO2 powder becomes Problems to be solved. In this paper, zirconium oxychloride and ammonia water were used as the main raw materials, and cerium nitrate was used as the stabilizer. The zirconia precursor was obtained by the coprecipitation solution method and the cross-spraying liquid method respectively. The conventional resistance furnace calcination and microwave pyrolysis were carried out to obtain nano zirconia. Powder. The effects of solution reaction temperature, stabilizer content, calcination mode and input power on the morphology of nano-ZrO2 powder were studied. The mechanism of cross-spray reaction and microwave pyrolysis of zirconia powder was analyzed and studied. The main results are as follows: The research shows that the zirconia precursor obtained by co-precipitation method is prepared by calcination using traditional resistance furnace. The zirconium powder has a particle size larger than 60 nm, and the size distribution is uneven, and there is a serious phenomenon of hard agglomeration of the particles. When the calcination temperature exceeds 600 ° C, abnormal growth of the particles occurs. Different from the conventional zirconia powder prepared by calcining the electric resistance furnace, the high-dispersion nano-zirconia powder can be prepared by coprecipitation-microwave pyrolysis method at 750 ° C for 20 min (the total calcination time is 60 min). The microwave pyrolyzed zirconia powder has a particle size of less than 40 nm, uniform particle size distribution, and good powder dispersion.

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