The invention provides a saggar for sintering of a high-nickel ternary material and a preparation method thereof. By a powder thermospraying method, the inner saggar side of the saggar that is contacted with a cathode material is sprayed with a layer of coating, so as to obtain the saggar for sintering of a high-nickel ternary material. The coating contains the following ingredients (by mass): 45-50% of LiAlO2, 45-50% of ZrO2, 0-10% of TiO2 and 0-10% of MgO, wherein particle size of LiAlO2 is 3-25 microns, particle size of ZrO2 is 5-35 microns, particle size of TiO2 is 3-25 microns, and particle size of MgO is 3-25 microns. The coating isolates the battery ternary cathode material and the saggar matrix, and excellent corrosion resistance of the coating prevents the saggar matrix from beingcorroded and then the frequency of the saggar for sintering the material is multiplied. By controlling types and particle size of the coating material, even if there is a little shedding during the later using process of the saggar, the shed impurities will not influence performance of the material when being mixed in the material. Thereby, use frequency of the saggar is increased, and service life of the saggar is furthermore prolonged and cost is reduced.

Saggar for sintering of high-nickel ternary material and preparation method thereof

The invention provides a preparation method of a special ceramic material and an application of the material. According to the method provided by the invention, raw material components and a content of a substrate material of the special ceramic material are adjusted, three-dimensional network structural aluminum oxide aerogel micropowder with a certain particle diameter, nano cordierite powder with a certain particle diameter and nano mullite powder with a certain particle diameter are added, in the preparation process, the nano cordierite powder with the certain particle diameter and the nano mullite powder with the certain particle diameter are dispersed into anhydrous ethanol, ultrasonic stirring is performed for mutual doping, the obtained slurry and other remaining special ceramic material substrate materials are mixed, so that aluminum aerogel micropowder, the nano cordierite powder and the nano mullite powder have a synergistic effect, that is, thermal shock generated in the process of resisting lithium ion erosion of the nano cordierite powder and the nano mullite powder is buffered by the three-dimensional network structure of the aluminum oxide aerogel, and the thermal shock resistance and erosion resistance fully cooperate; and the advantages are complementary, and the service life of the special ceramic material is further prolonged.

Preparation method of special ceramic material and application of material

The invention relates to an energy-saving cordierite zircon multiphase material and a preparation method thereof. According to the technical scheme, firstly, 40-60 wt% of zircon tailings, 35-50 wt% offine talc powder and 5-15 wt% of fine aluminium oxide powder are taken as raw materials, the raw materials of 40-50 wt% of water, 2-4 wt% of polyvinyl alcohol and 0.4-0.8 wt% of fine cerium oxide powder are additionally added, mixing is carried out, and ball-milling is carried out for 6-8 hours to obtain pulp; then the pup is subjected to spray granulation to obtain granular powder, then the granular powder is press-formed, heat preservation is carried out for 8-10 hours at 1350-1420 DEG C, natural cooling is carried out, and the energy-saving cordierite zircon multiphase material is obtained. The preparation method of the energy-saving cordierite zircon multiphase material has the advantages that the production cost is low, the method is green and environmentally friendly, and the scaleproduction is facilitated; the prepared energy-saving cordierite zircon multiphase material not only has high strength, an obvious energy-saving effect and good thermal shock resistance, but also hasa wide application range.

Energy-saving cordierite zircon multiphase material and preparation method thereof

The invention provides a special ceramic material with high corrosion resistance, a preparation method and application thereof. The special ceramic material is prepared from the following components:12-18% of Suzhou soil of 8-10 mesh, 8-12% of calcined aluminum oxide of 8-10 mesh, 3-6% of zirconium silicate of 8-10 mesh, 8-12% of roll bar powder of 8-10 mesh, 5-10% of fine roll bar particles of 8-10 mesh, 15-18% of coarse roll bar particles of 12-16 mesh, 10-15% of cordierite of 12-16 mesh, 8-10% of 45# mullite of 8-10 mesh, 1-5% of yellow dextrin and 3-9% of water. By reasonably controllingthe particle size of each raw material and adding a suitable content of zirconium silicate, the prepared special ceramic material has excellent corrosion resistance and meanwhile has ideal mechanicalproperties.

Special ceramic material with high corrosion resistance, preparation method and application thereof

The invention provides a corrosion-resistant crack-resistant special ceramic material as well as a preparation method and application thereof. According to the method provided by the invention, raw material components and a content of the raw material components of a special ceramic material substrate material are adjusted, and three-dimensional network structural aluminum oxide aerogel micropowder having a certain particle diameter is added and dispersed into a sagger substrate material as a micro-framework structure, so that substrate bonding force is enhanced, air pores generated in the firing process are reduced, stress change in the thermal-expansion cold-contraction process is buffered, and the thermal shock stability is improved; in addition, the bonding strength of the special ceramic material with aluminosilicate glass can be enhanced, so that the special ceramic material substrate material is not easy to peel off to affect quality of a lithium ion cathode material, at the same time further erosion of lithium ions in the sintering process can be inhibited, and the corrosion resistance is significantly enhanced; and in the process from the application to preparation of a sagger, the cycle frequency is high, the lithium ion erosion depth is shallow, and the costs of consumables can be reduced.

Corrosion-resistant crack-resistant special ceramic material as well as preparation method and application thereof

The invention discloses a formula and a production technology of a saggar for firing a cathode material for a lithium battery. The formula comprises a surface composite layer formula and a sagger mainbody formula, wherein the surface composite layer formula comprises the following components in percentage by mass: 18 to 22 percent of zircon sand with 200 meshes, 8 to 10 percent of superfine zircon sand with 8000 meshes, 16 to 20 percent of alumina powder with 800 meshes, 16 to 23 percent of cordierite with 100 meshes or below and 30 percent of Suzhou kaolin with 325 meshes; the sagger main body formula comprises 8 to 12 percent of cordierite with 8 to 16 meshes, 20 to 24 percent of cordierite with 16 to 60 meshes, 3 to 7 percent of cordierite with 60 to 100 meshes, 1 to 5 percent of cordierite with 100 meshes or above, 9 to 12 percent of mullite with 16 to 60 meshes, 18 to 22 percent of alumina powder with 800 meshes, 25 percent of No.2 hand-selected Suzhou kaolin with 325 meshes and3 to 5 percent of yellow dextrin. The formula and the production technology disclosed by the invention have the beneficial effects that firstly, in the formula of the saggar, the zircon sand is used to replace ZrO2, and the price of the zircon sand is relatively low, so that the production cost of the saggar is greatly reduced; secondly, the saggar prepared by adopting the formula and the technology disclosed by the invention has a zircon sand composite layer and higher corrosion resistance; thirdly, the economy and the high performance are perfectly unified.

Formula and production technology of saggar for firing cathode material for lithium battery

The invention discloses a high-corrosion-resistance coating for sagger and a using method of the high-corrosion-resistance coating. The formula (in percentage by mass) of the high-corrosion-resistancecoating is as the follows: 50%-80% of zirconium oxide, 10%-20% of Suzhou clay, 10%-20% of aluminum oxide powder and 0-20% of roller rod powder. The high-corrosion-resistance coating has the beneficial effects that: (1) a compact protective layer is formed on the surface of sagger by utilizing the principle of leveling surface gaps by using a liquid flow, so that high-corrosivity materials such aslithium cobalt oxide and the like can only be in contact with the outer surface layer of the sagger, the penetration of the high-corrosivity materials into the sagger body is greatly reduced, and thus the corrosion of the high-corrosivity materials to the sagger body is reduced; and (2) the sagger coated with the coating provided by the invention is snow-white in the whole body, is smooth and bright, has good consistency, has no flaws, and is more attractive.

Wei Jinfu

Papers

Formula and production technology of saggar for firing cathode material for lithium battery

High-corrosion-resistance coating for sagger and using method of high-corrosion-resistance coating