117results about How to "The preparation process conditions are mild" patented technology

The invention discloses a preparation method of an anisotropic FeSiAl magnetic core and a product. The preparation flow comprises the steps of (1) performing smashing on a FeSiAl cast ingot by adopting a sand mill and then performing flattening treatment to obtain flake-shaped FeSiAl magnetic powder; (2) coating the surface of the flake-shaped FeSiAl magnetic powder with an SiO<2> insulating material by adopting a sol-gel process; (3) performing uniform mixing on the coated FeSiAl and a binder to prepare coating paste, and coating a substrate with the paste, and next, putting the product into a magnetic field to be subjected to orientation; (4) performing hot pressing compaction treatment on the oriented coating sheet, and performing curing at a certain temperature; and (5) performing punch forming on the cured coating sheet to obtain the anisotropic FeSiAl magnetic core. The anisotropic FeSiAl magnetic core prepared in the invention has high insulativity as well as high heat resistance; high magnetic conductivity and low loss value still can be maintained at 1MHz, and high direct current biasing resistance characteristic is still kept; and in addition, the preparation process for the anisotropic FeSiAl magnetic core is mild in conditions, convenient and quick to operate and high in efficiency, and batch production can be promoted.

The invention relates to a composite flocculant for treating waste drilling fluid generated in the petroleum drilling process, and a preparation method thereof. The preparation method comprises the following steps of: extracting gelatin with larger relative molecular mass from waste skin collagen through alkaline hydrolysis; further hydrolyzing the extracted gelatin into collagen with moderate relative molecular mass by using different hydrolytic reagents; and loading proper metal ions on the collagen by using a tanning mechanism in tanning chemistry to obtain a cation type composite flocculant, and performing flocculation on anionic waste drilling fluid. The composite flocculant prepared by the method has the advantages of low cost, simple operation, high flocculating efficiency, safety and nontoxicity for a human body and the like, and is an environment-friendly product. Meanwhile, the waste skin collagen is reutilized, waste is used to treat contamination, and secondary pollution on the environment is avoided.

The invention discloses a preparation method and application of a stable Pickering emulsion based on zein / pullulan composite solid particles. The preparation method comprises the following steps: firstly, preparing zein solid particles, then preparing zein / pullulan composite solid particles, and homogenizing the zein / pullulan composite solid particles with an oil phase to construct the stable Pickering emulsion based on the zein / pullulan composite solid particles. The Pickering emulsion can be used for loading various citrus polymethoxylated flavonoid compounds. According to the preparation method disclosed by the invention, zein can achieve neutral wettability, the dosage of pullulan is small, the nutritional value is high, the pullulan is biodegradable, the preparation process is simple,the stability is high, the method is green and safe, and the obtained Pickering emulsion can be used for fresh keeping and drug loading.

The invention discloses a chemical agent for removing antimony in printing and dyeing wastewater and a removal method of the antimony. The chemical agent comprises a mixture composed of manganese tailing powder and FeSO4, wherein the mixture is solid powder; a main component of the manganese tailing powder is MnOx / SiO2, the grain diameter is 0.075 to 0.100mm and the mass ratio of MnOx / SiO2 / FeSO4 ranges from (1 to 1 to 1) to (1 to 1 to 8); FeSO4 is FeSO4.7H2O, FeSO4.3H2O or anhydrous ferrous sulfate; the removal method comprises the following steps: step 1, putting antimony-containing printingand dyeing wastewater into a pre-treatment tank and carrying out impurity removal pre-treatment, so as to obtain pre-treated antimony-containing printing and dyeing wastewater; step 2, putting the pre-treated antimony-containing printing and dyeing wastewater into a reaction contact tank and adding a certain amount of the chemical agent and contacting and stirring; after reacting for 30 to 60min,thus obtaining reacted antimony-containing printing and dyeing wastewater; step 3, putting the reacted antimony-containing printing and dyeing wastewater into a coagulation precipitation tank, and standing and precipitating; then carrying out solid-liquid separation to remove heavy metal antimony in the printing and dyeing wastewater.

The invention relates to a linezolid crystal form VI and a preparation method thereof. In the X-ray powder diffraction spectrum, the crystal form VI powder has absorption peaks at the diffraction angle 2-theta=11.25, 16.27, 16.70, 18.95, 19.69, 22.73, 25.09, 25.31, 26.22, 26.55, 27.54 and 29.60, wherein the error range of the angle 2-theta is + / -0.1. The linezolid crystal form VI provided by the invention has favorable dissolution rate and ideal dissolution effect, and can ensure the medicinal effect; and by using water as the solvent, the preparation method of the crystal form has the advantages of mild technical conditions, no organic solvent to be recycled or discharged, environmental protection and energy saving.

The invention relates to a preparation method of seaweed biological feed additive or seaweed biological feed. The preparation method is characterized in that compound microbial enzyme is added into seaweed slurry prepared from seaweed or seaweed residue for carrying out enzymolysis, so that the seaweed biological feed additive is obtained, wherein the compound microbial enzyme is prepared from multiples in cellulase, pectinase, protease and amylase. The preparation method provided by the invention is simple in process, easy to operate and low in cost; furthermore, the feed prepared by the method is rich in nutrition and easy to absorb.

The invention discloses fireproof composition for preparing fireproof glass and a preparation method thereof. The fireproof composition disclosed by the invention is prepared from the raw materials ofmethylacrylic acid, a photoinitiator 1173, acetone, cesium nitrate, potassium nitrate and sodium chloride. A preparation method of a fireproof solution disclosed by the invention is simple, and the fireproof glass prepared from the fireproof solution disclosed by the invention has the advantages of good high temperature resistance, high fire resistance, strong impact resistance and an excellent mechanical property.

The present invention provides lycium ruthenicum pigment soft sweets. The lycium ruthenicum pigment soft sweets are prepared by the following raw materials in parts by weight: 10-20 parts of a lycium ruthenicum pigment water extract, 40-50 parts of gelatin, 8-15 parts of glycerin, 40-60 parts of a sweetener, 2-10 parts of an acidulant and 100 parts of water. The lycium ruthenicum pigment water extract used in the lycium ruthenicum pigment soft sweets is rich in anthocyanins, amino acids, polysaccharides and other various nutrients, so that the soft sweets are high in nutritional value and unique in taste, and have good market prospects.