37results about How to "Not effectively" patented technology

The invention relates to a method for deeply removing copper from a cobalt salt solution. A two-stage copper removal technology is adopted for removing copper from a cobalt chloride solution. A regenerated copper removal agent used in a first stage of copper removal is sourced from copper removal slag produced by a second stage of the copper removal, and finally qualified copper slag is discharged; and cobalt thiocarbonate is added in the second stage of the copper removal, so that a qualified copper-removed liquid is produced. The method provided by the invention has the advantages that the characteristic that the copper removal slag can be regenerated into the copper removal agent is fully utilized, copper concentration can be reduced to below 1mg / L, and copper removal slag with the copper-cobalt ratio higher than 15 / 1 is obtained.

The invention relates to an optimized production method of Tri (tribromophenyl) cyanurate. Chlorobenzene is added into a reactor, phenol is added, hydrogen peroxide and bromine are dropwise added into the reactor in a staggering manner, extraction is performed by the aid of the chlorobenzene, a tribromophenol and chlorobenzene mixed liquid is obtained, cyanuric chloride is added into the mixed liquid, an initiating agent CTAB (cetyl trimethyl ammonium bromide), anhydrous sodium carbonate and methylbenzene are added for reaction, and a crude product is transferred to a heating kettle, the product is subjected to pressure reduction and suction filtration in a heating and dissolving state and is finally transferred to a distillation kettle and stirred and crystallized, edulcoration is realized before unit cell arrangement, and the product is obtained. According to the optimized production method of Tri (tribromophenyl) cyanurate, the produced by-products are reduced, the yield is improved, and the product quality is higher.

The invention provides a method for quickly separating mites and feed. The steps are to take an appropriate amount of samples that need to be collected from the mites, and use sampling sieves with different apertures according to the size of the mites to perform preliminary screening; the samples after the preliminary screening are evenly spread on the Turn over the plastic plate after standing still, a large number of mites and a small part of feed debris will be adsorbed on the plastic plate; put the plastic plate with the sample after preliminary treatment upside down on the finer sampling sieve, Gently tap with your hand or a small wooden stick to make all the samples fall into the sampling sieve. After standing still, invert the sampling sieve, the residual feed will fall off, and the rest in the sieve is all the required mites, basically no feed debris.

A preparation method for an anti-seismic and energy-dissipating resin concrete mixed reinforced concrete frame, which has six major steps: 1. Reserve the position where plastic hinges may appear in the frame, and pour the rest of the frame according to the original construction design; 2. Pouring in the frame After curing the concrete for 14 days, chisel out stubble from the concrete around the reserved position, remove gravel and dust, and clean the surface with acetone; 3. Use resin cement as a base layer with a thickness of 3-5 mm; 4. The formwork is supported at the reserved position; 5. Prepare and pour resin concrete; 6. The resin concrete frame is maintained at an environment above 10 degrees Celsius, and the formwork is removed after 72 hours. The present invention utilizes the characteristic that the ultimate compressive strain of resin concrete is much greater than that of ordinary concrete, and fills resin concrete at an appropriate position in an ordinary reinforced concrete frame to form a mixed frame structure, so that the frame can consume earthquake energy without destroying the whole frame , it has practical value in the field of civil engineering technology.