36results about How to "Less precipitation" patented technology

The invention relates to a granular compound flocculant for water treatment compositely comprising a bilayer or multilayer flocculant. The components according to the weight percentage are as follows: aluminum salt 40%-60%, ferric salt 15%-30%, polyacrylamide 0.5%-10% and starch 1%-15%. The flocculant of the invention integrates the characteristic of both inorganic and organic flocculants, improves the dosing mode of the medicament, increases the action efficiency of the medicament by using the multilayer sustained release structure and improves the efficiency of the medicament.

A method for producing a laminated dielectric, which comprises laminating a raw material layer containing a high dielectric constant glass ceramic composition comprising from 30 to 70 mass % of a Ba—Ti compound powder having a Ti/Ba molar ratio of from 3.0 to 5.7 and from 30 to 70 mass % of an alkali free glass powder containing, by mol %, from 15 to 40% of SiO₂, from 5 to 37% of B2O3, from 2 to 15% of Al₂O₃, from 1 to 25% of CaO+SrO, from 5 to 25% of BaO and from 25 to 50% of SiO₂+Al₂O₃, and a raw material layer containing a low dielectric constant glass ceramic composition comprising from 10 to 70 mass % of a ceramic powder and from 30 to 90 mass % of an alkali free glass powder wherein SiO₂+Al₂O₃ is at least 34 mol % and larger by at least 9 mol % than that in the above alkali free glass powder, followed by firing.

The present invention relates to processes for producing fermentation products from starch-containing material, wherein a thermostable alpha-amylase and optionally a thermostable protease are present and/or added during liquefaction. The invention also relates to a composition suitable for use in a process of the invention.

A yellow water-based pigment dispersion liquid is provided that includes pigment particles dispersed with a significantly small particle size, that has excellent dispersion stability, that causes less precipitation even at low viscosity, and that provides high gloss when the dispersion liquid is used as a main component of inkjet recording ink. In order to produce the water-based pigment dispersion liquid, it is important to add, as a kneading aid, an acetylene glycol surfactant having a specific structure and an HLB value of 8 to 12 to a mixture containing a bis-acetoacetallylide pigment, a styrene-acrylic acid copolymer having an acid value of 145 to 175, a basic compound, and a humectant and then to knead the resultant mixture to obtain a pigment dispersion. By dispersing the pigment dispersion in a water-based medium, a water-based pigment dispersion liquid for inkjet recording having the characteristics above can be produced.

A quick release device for faucets mainly includes a valve and a quick release unit. The valve is connected to at least two passages through which water flows, at least one passage is formed with a concave joint slot the inner circumference of which is formed with a shift limit slot. The quick release joint unit is oppositely arranged in the joint slot, and a shift limit unit is provided in the quick release joint and may be thereby fixed in the shift limit slot. A pipeline is provided that may be quickly installed on and removed from the quick release joint group. Thus, the installation time may be saved, the complicated installation steps may be reduced, and the area where flowing water contacts the metal may be decreased.

The present invention relates to a method for producing an acidified product using an enzyme having transglutaminase activity.

The invention discloses a round integrated oxidation ditch. The oxidation ditch is a continuous and enclosed concentric circle like reactor, two rings outside sequentially form an external ditch (10) and an intermediate ditch (8), the liquid surfaces of the external ditch (10) and the intermediate ditch (8) are provided with a stream pushing aeration machine (1), an intermediate ring forms a secondary sedimentation tank (9), the secondary sedimentation tank (9) is internally provided with a mud scraper (4), the circumference wall of the secondary sedimentation tank (9) is provided with a water inflow skirtboard (3), the inner wall of the intermediate ditch (8) is provided with a water distributing hole (5), a mud collecting well (7) is arranged outside the round ring, and the mud collecting well (7) is internally provided with a sludge pump (6). The water distributing hole (5) interval on the inner wall of the intermediate ditch (8) is 300-600mm. The diameter Phi of water distributing hole (5) is 20-30mm. An annular effluent weir is arranged between the inner wall of the intermediate ditch (8) and the secondary sedimentation tank (9). The invention has high aeration oxygenating efficiency, stable running and convenient operation and maintenance, occupying area is small, and flow is simplified and smooth.

The invention discloses a method for separating and enriching trace lead in a substrate, which comprises the following steps: adding an alkaline precipitator into the substrate with shaking till the pH value of the solution is 7 to 9 and gelatinous precipitate appears in the solution; centrifuging the solution to obtain separated precipitate and supernate and removing the supernate; and according to test requirements, dissolving the precipitate in acid, fixing volume, and performing quantitative or fingerprint analysis on the lead in the solution. In the invention, a precipitation-centrifugation process is used to remove a large amount of Na, K and other ions which are not precipitated in the substrate from the supernate, the trace lead ions are separated and enriched at one step, the operation is simple and convenient, the repeatability is high, the recovery rate is high, fewer pollutants are introduced, and the method can be used for samples in which the substrate has high concentration and complex components.

The invention belongs to the technical field of high-temperature coating superconducting material preparation, and prepares a Ti-doped YBCO film through the following steps that preparing YBCO precursor solution and Ti precursor solution, preparing Ti-doped YBCO precursor solution, coating a gel wet film, sintering the gel wet film with low temperature, and sintering a precursor amorphous film with high temperature. The preparation process of the invention adopts simple devices, and has low cost, and the prepared film has higher critical current density, critical conversion temperature and a double-shaft textured structure.

To provide a polishing composition in which abrasives are less likely to precipitate and precipitated and agglomerated abrasives easily redisperse. A polishing composition has abrasives, a liquid medium, metal oxide particles, and a water-soluble polymer. The average primary particle diameter of the metal oxide particles is 1/10 or less of the average primary particle diameter of the abrasives and the weight average molecular weight of the water-soluble polymer is 200 or more and 1000 or less.

A nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes a separator which contains a first region located in a flat part of an electrode body and second regions located in a pair of curved parts, the ratio (B/A) of the air permeability (B) in each of the second regions to the air permeability (A) in the first region being 0.5 or more and 0.9 or less. Further, in a section passing through the center in the axial direction of the electrode body and being perpendicular to the axial direction, the ratio (SB/SA) of the sectional area (SB) of the pair of curved parts to the sectional area (SA) of the flat part is 0.28 or more and 0.32 or less.

A steel alloy for a bearing, the alloy having a composition that provides: from 0.8 to 1.0 wt. % carbon, from 0.1 to 0.5 wt. % silicon, from 0.2 to 0.9 wt. % manganese, from 2.0 to 3.3 wt. % chromium, from 0 to 0.4 wt. % molybdenum, from 0 to 0.2 wt. % cobalt, from 0 to 0.2 wt. % iridium, from 0 to 0.2 wt. % rhenium, from 0 to 0.2 wt. % vanadium, from 0 to 0.1 wt. % niobium, from 0 to 0.5 wt. % tungsten, from 0 to 0.2 wt. % nickel, from 0 to 0.4 wt. % copper, from 0 to 0.05 wt. % aluminum, from 0 to 150 ppm nitrogen, and the balance iron, together with any unavoidable impurities.