61results about How to "Solve the chalking problem" patented technology

The invention relates to a method for preparing polycrystal mullite fibers, which is characterized by comprising the following steps of: dissolving aluminite powder into a mixture of formic acid and acetic acid, and heating and refluxing to prepare mixed sol solution of aluminium basic and aluminium acetate; adding acid silicone sol without sodium into the mixed sol of aluminium basic and aluminium acetate; adding spinning auxiliaries into the evenly mixed solution; adding a surface active agent in the mixture; adding one or more of tartaric acid, citric acid or lactic acid in spinning dope; fibering the mixture under the condition of injection or thrown silk; initially drying polycrystal alumina fiber strand; and heating the polycrystal alumina fiber strand at the temperature of 500-1,400 DEG C. The polycrystal mullite fiber prepared by the method is free from using inorganic strong acid, cannot cause environment pollution, has high fiber softness, good toughness and low friability index, and solves the problem of pulverization of the polycrystal mullite fiber, which always exists.

The invention relates to a preparation method and application of a lithium battery binder with self-repairing performance. The method comprises the following steps: adding component A containing dithiolactone functional group and component B containing amino functional group into a solvent, and reacting at 50-100° C. for 12 hours to obtain a lithium battery polymer with self-repairing performance material binder; the component A of the sulfur-containing lactone functional group is N,N'-oxalylthiolactone, N,N'-malonylthiolactone, N,N'-succinylthiolactone lactone, N,N'-glutaryl thiolactone, N,N'-adipyl thiolactone or N,N'-sebacoyl thiolactone; the amino functional group-containing component B is Polyethyleneimine, chitosan, aminocellulose or polylysine. The polymer binder of the present invention can make the positive electrode of the lithium battery have the characteristic of self-repairing, thereby greatly improving the powdering problem of the electrode material, and is beneficial to improving the discharge specific capacity and cycle stability of the lithium battery.

The invention relates to a furnace building method for a rotary kiln tube body inner liner. The furnace building method comprises the steps that (1) a tube body is divided into a plurality of sections in the diameter direction, and then, the tube body is divided into a plurality of strips in an axial direction; (2) fireproof combined blocks are manufactured; (3) the fireproof combined blocks are welded on the tube body in the axial direction, and a line of fireproof combined blocks are arranged in the section of tube body; (4) the step (3) is repeated, and a plurality of lines of fireproof combined blocks are installed; (5) an anchoring element is welded in a tube body strip seam of the fireproof combined blocks; (6) a fireproof heat insulation plate is arranged in a tube body strip seam of the anchoring element; (7) fireproof casting materials are fully filled in the strip seam provided with the fireproof heat insulation plate; (8) the fireproof casting materials are dried and cured, and the furnace building construction of the region is completed; the steps are repeated until the furnace building construction of the whole rotary kiln tube body inner liner is completed. The furnace building method has the advantages that the structure is simple, the construction is convenient, the cost is low, the heat insulation performance of a rotary kiln can be improved, the energy consumption of the rotary kiln can be reduced, the heat loss of the rotary kiln can be reduced, and the like.