32 results about "Phosphorus low" patented technology

The invention discloses a phosphorus and silicon removing method of a vanadium-contained clinker. A vanadium-contained clinker leaching liquor is obtained by leaching the vanadium-contained clinker by using the method comprising the following steps of: setting the temperature of the vanadium-contained clinker leaching liquor within a temperature range of 60 DEG C to boiling; regulating the pH value of the vanadium-contained clinker leaching liquor; regulating the pH value of the vanadium-contained clinker leaching liquor by utilizing an acid and an alkali according to the varieties of purifying agents to be added; adding the purifying agent and determining the addition of the purifying agent according to the detected contents of phosphorus and silicon in the vanadium-contained clinker leaching liquor and the reaction formula of the phosphorus and the silicon in the vanadium-contained clinker leaching liquor and the purifying agent; and cooling and filtering the obtained vanadium-contained clinker leaching liquor to obtain a low-phosphorus low-silicon vanadium liquor. The phosphorus and silicon removing method of the vanadium-contained clinker has a loose requirement for vanadium liquor components and can simultaneously effectively remove the phosphorus and the silicon as impurities.

The present invention belongs to the technical field of a new material, and provides a multilayer coated red phosphorus low smoke halogen-free flame retardant polyolefin cable sheath material and a preparation method thereof. The sheath material comprises the following components, by weight, 30-70 parts of a matrix resin A, 30-70 parts of a matrix resin B, 5-30 parts of a compatibilizer, 5-40 parts of a flame retardant agent A, 10-40 parts of a flame retardant agent B, 0.1-2 parts of a lubricant, and 0.1-1 part of an antioxidant. The preparation method comprises the following steps: A, extruding; and B, carrying out granulation on the extruded material by a granulator to obtain the sheath material finished product. Advantages of the material of the present invention are that: the sheath material is prepared by matching the flame retardant agent A and the flame retardant agent B with the polyolefin elastomer raw material, such that characteristics of halogen-free property and good low smoke flame retardation effect are provided, and advantages of good physical property, good water resistance and less dripping are provided; and the preparation method has a simple preparation process, and is suitable for large-scale industrial production.

The invention discloses an environment friendly metal surface treatment agent and application thereof. The environment friendly metal surface treatment agent uses water as a solvent and contains 10 ppm-50000 ppm of a zirconium/titanium compound, 200 ppm-10000 ppm of an organic material, 20 ppm-1000 ppm of a complexing agent, 20 ppm-1000 ppm of a wetting assistant, 1 ppm-10000 ppm of a film formation accelerant and 1 ppm-200 ppm of an antirust agent. The non-phosphorus low-nitrogen before-coating environment friendly metal surface treatment agent is provided, main ingredients of the agent do not contain nitrogen, and meanwhile, a composite conversion film capable of improving the film corrosion resistance and the coating bonding capacity can be formed on the metal surface.

The invention belongs to the welding wire technical field, and discloses a special welding wire for 80 Kg level steel plate with low welding crack sensibility and high strength. The invention has the technical proposal that the welding wire includes the elements in the following weight percentage: 0.06 to 0.12 percent of carbon, 0.40 to 1.00 percent of silicon, 1.40 to 2.10 percent of manganese, 0.02 to 0.20 percent of titanium, 0.001 to 0.01 percent of boron, 0.05 to 1.50 percent of nickel, 0.05 to 1.20 percent of chromium, niobium b lower than or equal to 0.10 percent, vanadium lower than or equal to 0.10 percent, sulfur lower than or equal to 0.10 percent, phosphorus lower than or equal to 0.10 percent, the rest comprises iron and other unavoidable foreign matters. Through the experiment, the ambient temperature of the welding joint for welding crack sensibility and high strength steel plate is subzero 20 DEG C to 50 DEG C by utilizing the welding wire without preheat, and the occurrence of cold cracks can be prevented.

The invention discloses an addition technology of a zero-phosphorus-low-phosphorus grey water scale inhibition and dispersion agent, and belongs to the technical field of gasification water treatment. A formula and an addition technology of a scale inhibition and dispersion agent are improved, a low-phosphorus dispersion agent is added at a high-temperature part, a zero-phosphorus dispersion agent is added at a low-temperature part, and the low-phosphorus dispersion agent and the zero-phosphorus dispersion agent are combined and added at different sections, so that the content of phosphorus elements in externally discharged waste water of gasification enterprises is greatly reduced, the discharged waste water reaches the first-level industrial water discharge standard of China, environment-friendly discharge is realized, and besides, good grey waste scale inhibition and dispersion effects are achieved.

The invention relates to the field of laundry supplies, in particular to a non-phosphorous low-foaming washing powder method. The non-phosphorous low-foaming washing powder method includes: filling 50-60 parts of sodium bicarbonate and 2-3 parts of hydroxymethyl cellulose into a mixer to uniformly mix, then adding 1-12 parts of sodium dodecyl benzene sulfonate and 6-10 parts of sodium silicate after mixing, adding 6-8 parts of fatty acid after reaction, adding 4-6 parts of 10% sodium perborate after 24 hours to uniformly mix and adding proper essence and fluorescent brightener. Production equipment for non-phosphorous low-foaming washing powder is simple. The non-phosphorous low-foaming washing powder is low in foaming and applicable to washing machines, utilizes natural plant and animal oil as active matters, is compounded with various high-efficient surfactants and alkalescence builders and is capable of efficiently cleaning, pollution-free and harmless for human bodies. The fluorescent brightener has functions of whitening and brightening, and the essence can make detergents aromatic. The non-phosphorous low-foaming washing powder can be used to wash off gentian violet, ball pen oil, stains of oil, blood, milk, juice and the like which are hard to remove, and is veritable in cleaning.

A low-cost efficient dephosphorization smelting process for electric arc furnace belongs to the field of electric arc furnace smelting. According to the invention, reasonable blending process is carried out in a charging stage of the electric arc furnace; accessories in a traditional electric arc furnace smelting process is moved to a charging stage; through reasonable distribution of the cold raw materials and accessories in the electric arc furnace, problems of contradiction of theoretical demands of the dephosphorization oxygen potential, alkalinity and temperature during melting process of the cold raw materials and accessories is solved; and smelting dephosphorization process of the electric arc furnace runs through the whole process from starting to the end of the melting, so as to achieve the goal of efficient dephosphorization. The invention has the following advantages: the difficulty in dephosphorization of electric arc furnace traditional smelting process is solved; dephosphorization is basically realized when the melting down of the cold materials; and the process realizes dephosphorization rate of 75%-90%, rephosphorization rate after deslagging less than 5%, and end point phosphorus lower than 0.01%.

The invention discloses a calcification roasting method of a vanadium/phosphorus-containing material. The method is implemented by carrying out calcification roasting on a roasting material, wherein the roasting material comprises a vanadium/phosphorus-containing material, a calcium-containing material, a saccharide compound, a magnesium-containing compound and an aluminum-containing compound; the calcification roasting comprises first roasting and second roasting; in the first roasting process, the temperature is increased from 15-100 DEG C to 300-600 DEG C at the speed of 8-15 DEG C/minute; and in the second roasting process, the temperature is 820-900 DEG C, and the time is 80-180 minutes. Under the synergetic effects of the saccharide compound, magnesium-containing compound and aluminum-containing compound under roasting conditions, the materials can not be easily sintered; and the roasted materials can be leached to directly obtain the low-phosphorus low-silicon high-vanadium-content vanadium-containing leach solution.

The invention belongs to the welding wire technical field, which discloses a special welding wire for a steel plate with low welding crack sensibility and high strength. The technical proposal is that the welding wire contains elements in the following weight percentage: 0.06 to 0.12 percent of carbon, 0.40 to 1.00 percent of silicon, 1.40 to 2.10 percent of manganese, 0.02 to 0.20 percent of titanium, 0.001 to 0.01 percent of boron, 0.20 to 0.60 percent of molybdenum, 0.05 to 1.20 percent of chromium, niobium b lower than or equal to 0.10 percent , vanadium lower than or equal to 0.10 percent, sulfur lower than or equal to 0.10 percent, phosphorus lower than or equal to 0.10 percent, the rest comprises iron and other unavoidable foreign matters. Through the experiment, the ambient temperature of the welding joint for welding crack sensibility and high strength steel plate is subzero 20 DEG C by utilizing the welding wire without preheat, and the creation of cold cracks can be prevented.

The invention provides low phosphorus low-sulphur nickel-containing pig iron comprising less than 4.5% of C, 4.0-9.0% of Ni, less than 0.05% of S, less than 0.05% of P, less than 0.2% of impurity elements and the balance of Fe. The invention also provides a preparation method of the low phosphorus low-sulphur nickel-containing pig iron by use of a low grade nickel ore, and the method includes ore separation, crushing and sintering of the nickel ore, crude smelting in a blast furnace, refining in an electric arc furnace and other steps.

The invention provides a low-phosphorus low-sulfur high-alloy thick plate blank smelting process, and belongs to the technical field of steel making. As for the steps and parameter control, a double slag method is adopted in a converter, the catch carbon temperature is controlled to be 1600-1620 DEG C, and the phosphorus content at the endpoint is controlled to be no more than 0.008 wt%; the content of [S] in pretreated molten iron is no more than 0.0050 wt%; as for slag oxidation controlled by LF refining control, the sum of FeO and MnO is equal to 1.0-1.5 wt%, and the slag adding amount is 8-12 kg per ton of steel; a thick plate blank is adopted for production, and the maximum thickness specification is 400 mm; and the superheat degree is controlled to be 15-25 DEG C in the continuous casting process. The low-phosphorus low-sulfur high-alloy thick plate blank smelting process has the advantages that a production method of a high-alloy steel blank with the alloy amount being 5-12 wt%,the content of finished phosphorus is controlled to be no more than 0.015 wt%, the content of sulfur is controlled to be no more than 0.0025 wt%, and the maximum alloy amount of high-alloy steel canreach to 12 wt%.

The invention relates to low-phosphorus low-protein instant rice suitable for people with chronic kidney diseases to eat. The preparation steps comprises raw material pretreatment, burdening, composite strain fermentation, high-temperature and high-pressure airflow jet powder mixing, twin-screw extrusion curing, ultrahigh-pressure full-speed fresh-keeping cold air knife rotary cutting, cooling, secondary microwave puffing, electromagnetic vibration enhanced vacuum freeze drying, polishing, back-pressure sterilization, packaging and finished product obtaining. With the high-temperature high-pressure airflow jet powder mixing technology, the instant rice can be eaten instantly after being brewed with boiled water, so that complete curing needs to be guaranteed in the processing process. According to the invention, the high pressure (3-4Mpa) is adopted to generate high-speed airflow, so that the rice flour is sprayed and impacted without dead angles and the water content of the mixed material added with water is uniform. The high temperature (90-120 DEG C) enables the rice flour to be primarily cured before extrusion, so that complete curing after extrusion is ensured; protein denaturation occurs at the same time, so that the content of non-high-quality protein is reduced. Aspergillus oryzae strains remaining in the rice flour can be killed under high temperature and high pressure.

The present invention provides a low-phosphorus polyamide compound and a process for preparing such a polyamide.

The invention provides a novel low-phosphorus low-sulfur steel smelting process. The novel low-phosphorus low-sulfur steel smelting process comprises the following steps: 1, carrying out furnace washing and steel ladle washing operations before converter smelting; 2, carrying out a desulfurization process, specifically, carrying out deep desulfurization by using high-temperature molten iron and adopting a KR desulfurization method, wherein the sulfur content in the molten iron is less than or equal to 0.001%; 3, carrying out a converter process, specifically, carrying out smelting by using a top-bottom combined blowing converter, adding self-produced first-class waste steel by adopting a single-slag remaining method, using low-phosphorus low-sulfur lime, dolomite and iron-containing oxide, carrying out converter end point control, specifically, controlling the tapping carbon content to be less than or equal to 0.04%, the phosphorus content to be less than or equal to 0.009%, the sulfur content to be less than or equal to 0.004% and the temperature to be greater than or equal to 1620 DEG C, adding a dephosphorization agent and lime in the tapping process for slag washing, adding part of lime for slag thickening treatment after tapping is finished, then carrying out slagging-off operation, and carrying out alloying after slagging-off is finished; 4, carrying out a refining process, specifically, carrying out fine adjustment on components, slagging, removing impurities and increasing the temperature; and 5, carrying out a continuous casting process, specifically, carrying out continuous casting, and finally ensuring that the content of phosphorus and sulfur in a casting blank smelting finished product is less than or equal to 100 ppm.