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32results about How to "Suitable for industrial production promotion" patented technology

Reproducible high-aluminum fireproof raw material utilizing ferrotitanium slag as main material and preparation method thereof

The invention relates to a reproducible high-aluminum fireproof raw material utilizing ferrotitanium slag as a main material and a preparation method thereof. The technical scheme is as follows: grinding ferrotitanium slag globules until the granularity is less than or equal to 100 mu m, putting the ferrotitanium slag powder into a muffle furnace, and incinerating at a temperature of 700-750 DEG C for 3-5 hours; adding 1-3mol / L hydrochloric acid solution into the incinerated ferrotitanium slag powder, wherein the mass ratio of the incinerated ferrotitanium slag powder to the hydrochloric acid solution is 1:(2-3); stirring, washing with water and performing suction filtration, thereby obtaining precursor ferrotitanium slag powder; then adding water which accounts for 10-15wt% of the precursor ferrotitanium slag powder into the precursor ferrotitanium slag powder, performing wet grinding until the granularity is less than or equal to 60 mu m, performing vacuum mud extrusion molding, and ageing the mixture for 36-48 hours; and putting the mixture into a resistance furnace, heating to 1500-1550 DEG C, performing heat preservation for 1-3 hours, and crushing, thereby obtaining the reproducible high-aluminum fireproof raw material utilizing the ferrotitanium slag as the main material. The preparation method has the characteristics of simple process, low production cost and no special requirements on equipment; and the prepared reproducible high-aluminum fireproof raw material is high in fire resistance and favorable in sintering performance.
Owner:WUHAN UNIV OF SCI & TECH +1

Mullite raw material adopting alumina-chrome slag as main ingredient and preparation method thereof

The invention relates to a mullite raw material adopting alumina-chrome slag as a main ingredient and a preparation method thereof. According to the technical scheme, the method comprises the steps that the alumina-chrome slag is placed into a muffle furnace, and calcination is performed under the temperature of 700-750 DEG C for 3-5 h to obtain calcined alumina-chrome slag; the calcined alumina-chrome slag, silica powder and aluminite powder are mixed on the basis that the mass ratio of the calcined alumina-chrome slag to the silica powder to the aluminite powder is 100:(16.0-16.5):(2.0-4.5) for 15-20 min, and a mixed material is obtained; the mixed material is placed into an electromagnetic induction furnace, the temperature is increased to 1,800-1,840 DEG C and kept constant for 2-3 h; then, an upper scum layer is separated out, furnace cooling is performed to the room temperature, and crushing is performed to obtain the synthesis mullite raw material adopting the alumina-chrome slag as the main ingredient. The alumina-chrome slag contains main chemical components: 80-85 wt% of Al2O3, 10-15 wt% of Cr2O3 and not larger than 1 wt% of Fe2O3. The technology is simple, the production cost is low, and no special requirement for equipment is needed; the prepared mullite raw material adopting the alumina-chrome slag as the main ingredient is high in refractoriness, good in sintering performance and high in mullite conversion rate.
Owner:锦州集信高温材料有限公司

Method for preparing tryptophan, fermentation medium used for the same, and special nutrient element for tryptophan fermentation

PendingCN109182407AIncreased acid production and conversionImprove the level of fermentation technologyFermentationNutrientTryptophan
The invention provides a method for preparing tryptophan, a fermentation medium used for the same, and a nutrient special for tryptophan fermentation. The method for preparing tryptophan includes thesteps: obtaining a mixture by mixing the defatted silkworm pupa protein, yeast powder and peptone, adding 5 to 20% of purified water into the mixture to prepare a feed liquid, stirring uniformly, heating the mixture to 80 to 100 DEG C, then cooling to 40-60 DEG C, adding 1-10% protease of the mixture to carry out enzymatic hydrolysis for 2-15h, heating the enzymatic hydrolysate to 90-120 DEG C tokill the enzyme, filtering the enzyme hydrolysate to obtain filtrate, concentrating and drying the filtrate to obtain tryptophan fermentation special nutrient element, wherein the tryptophan fermentation special nutrient element is obtained. As the special nutrient element for tryptophan fermentation is use in tryptophan fermentation, the acid production and conversion rate of tryptophan can be greatly improved, and the technical level of tryptophan fermentation can be improve.
Owner:江苏澳创生物科技有限公司

Recycling method of carbide slag

The invention discloses a recycling method of carbide slag, which comprises the following steps of: (1) reacting the carbide slag with the solution of sodium carbonate and filtering the reaction solution to obtain filtrate B and filter residue A, wherein the filtrate B is the solution of sodium hydroxide; (2) adding the filtrate A into hydrochloric acid, heating the mixture till the mixture boilsto perform a reaction, filtering the reaction solution to obtain a filter residue C and a filtrate D, wherein the filter residue C is used as clinker for cement production; and (3) adding hydrogen peroxide into the filtrate D to perform a reaction for 10 and 20 minutes, adjusting pH value of the reaction solution to 8.5 and 9.0 by using saturated lime water, filtering the reaction solution, drying the filter residue to obtain ferric hydroxide, concentrating the filtrate to precipitate a calcium chloride dehydrate solid, processing the obtained concentrated residual liquid by using the solution of sodium carbonate, filtering the mixed solution to obtain a solid mixture of magnesium carbonate and calcium carbonate, reacting the mixture react with the solution of sulphuric acid and filteringthe reaction solution to obtain calcium sulphate solids and the solution of magnesium sulfate. The resource processing method for the carbide slag has the advantages of various byproducts, high product quality, simple process flow, small equipment investment, easy operation, mild reaction conditions, low production cost, environmental friendliness and wide application prospect.
Owner:开封新巨源环保科技开发有限公司

Reproducible high-aluminum fireproof raw material utilizing ferrotitanium slag as main material and preparation method thereof

The invention relates to a reproducible high-aluminum fireproof raw material utilizing ferrotitanium slag as a main material and a preparation method thereof. The technical scheme is as follows: grinding ferrotitanium slag globules until the granularity is less than or equal to 100 mu m, putting the ferrotitanium slag powder into a muffle furnace, and incinerating at a temperature of 700-750 DEG C for 3-5 hours; adding 1-3mol / L hydrochloric acid solution into the incinerated ferrotitanium slag powder, wherein the mass ratio of the incinerated ferrotitanium slag powder to the hydrochloric acid solution is 1:(2-3); stirring, washing with water and performing suction filtration, thereby obtaining precursor ferrotitanium slag powder; then adding water which accounts for 10-15wt% of the precursor ferrotitanium slag powder into the precursor ferrotitanium slag powder, performing wet grinding until the granularity is less than or equal to 60 mu m, performing vacuum mud extrusion molding, and ageing the mixture for 36-48 hours; and putting the mixture into a resistance furnace, heating to 1500-1550 DEG C, performing heat preservation for 1-3 hours, and crushing, thereby obtaining the reproducible high-aluminum fireproof raw material utilizing the ferrotitanium slag as the main material. The preparation method has the characteristics of simple process, low production cost and no special requirements on equipment; and the prepared reproducible high-aluminum fireproof raw material is high in fire resistance and favorable in sintering performance.
Owner:WUHAN UNIV OF SCI & TECH +1

Synthetic mullite raw material with aluminum chromium slag as main material and preparation method thereof

The invention relates to a mullite raw material adopting alumina-chrome slag as a main ingredient and a preparation method thereof. According to the technical scheme, the method comprises the steps that the alumina-chrome slag is placed into a muffle furnace, and calcination is performed under the temperature of 700-750 DEG C for 3-5 h to obtain calcined alumina-chrome slag; the calcined alumina-chrome slag, silica powder and aluminite powder are mixed on the basis that the mass ratio of the calcined alumina-chrome slag to the silica powder to the aluminite powder is 100:(16.0-16.5):(2.0-4.5) for 15-20 min, and a mixed material is obtained; the mixed material is placed into an electromagnetic induction furnace, the temperature is increased to 1,800-1,840 DEG C and kept constant for 2-3 h; then, an upper scum layer is separated out, furnace cooling is performed to the room temperature, and crushing is performed to obtain the synthesis mullite raw material adopting the alumina-chrome slag as the main ingredient. The alumina-chrome slag contains main chemical components: 80-85 wt% of Al2O3, 10-15 wt% of Cr2O3 and not larger than 1 wt% of Fe2O3. The technology is simple, the production cost is low, and no special requirement for equipment is needed; the prepared mullite raw material adopting the alumina-chrome slag as the main ingredient is high in refractoriness, good in sintering performance and high in mullite conversion rate.
Owner:锦州集信高温材料有限公司

Weaving treatment method for avoiding reduction of mechanical properties of high-strength fiber fabric

The invention discloses a weaving treatment method for avoiding reduction of mechanical properties of a high-strength fiber fabric. The weaving treatment method comprises the following steps that by high-strength fibers are used as a core and wrapped with water-soluble fibers by using a compound yarn machine wrapping process to obtain high-strength composite fibers, and the high-strength compositefibers are woven into a high-strength fabric containing the water-soluble fibers on a rapier loom by using a plain weaving process; and then water treatment is conducted to completely dissolve the water-soluble fibers, and drying and winding are conducted to obtain the pure high-strength fiber fabric. According to the method, abrasion of the high-strength fibers to loom assemblies due to monofilament breakage is effectively reduced, and the trafficability of the fibers in the weaving process is effectively improved; the damage of the acid-base concentration of traditional water treatment to the mechanical properties of the high-strength fabric is effectively reduced, and the overall mechanical properties of the high-strength fiber fabric are effectively improved; and the product defects such as the hairiness rate of the cloth cover are greatly reduced, and the weaving production benefits are also improved.
Owner:苏州福洹纺织科技有限公司

Method for obtaining somatic cells by performing enzymolysis on purple laver by using conch digestive glands

The invention discloses a method for obtaining somatic cells by performing enzymolysis on purple laver by using conch digestive glands. The method comprises the following steps: homogenizing fresh conch digestive glands, carrying out salting-out, and carrying out enzymolysis on purple laver tissues by directly using the salting-out product as the enzyme solution, thereby obtaining the somatic cells. The treatment method can simplify the operation and shorten the enzymolysis time, has favorable enzymolysis effect, does not need to add cellulase or other enzymes in the enzymolysis process, can effectively lower the cost, has favorable economic benefits, and is suitable for industrialized production and popularization.
Owner:福建省平潭县水产良种实验有限公司

A kind of preparation method and application of corrosion-resistant super-hydrophobic stainless steel mesh

The invention discloses a preparation method and application of a corrosion-resistant super-hydrophobic stainless steel mesh. The oil-water separation mesh uses stainless steel mesh as a base material, and adopts a resin bonding method to firmly bond modified fly ash to the base On the material skeleton, corrosion-resistant super-hydrophobic stainless steel mesh is obtained after curing. The corrosion-resistant stainless steel mesh of the present invention still maintains high superhydrophobic durability after 100 wear tests. The corrosion-resistant stainless steel mesh of the present invention can be applied in the fields of separation of oil / water mixture and treatment of oily wastewater, and continuous oil-water separation can be realized by building a device, the treatment capacity of oil-water mixture is large, the operation is simple, and the separation effect is good. The corrosion-resistant oil-water separation stainless steel mesh of the present invention has a simple preparation process, the whole production cycle is as low as 5 hours, and the preparation raw materials are cheap and easy to obtain, and the environment is friendly, which is convenient for industrial large-scale batch production, and has high economic benefits and practical value.
Owner:YANAN UNIV

Recycling method of high concentration phosphate and compound fertilizer residues

The invention relates to a recycling method of a high concentration phosphate and compound fertilizer residue. The method comprises the following steps: by taking a high concentration phosphate and compound fertilizer waste residue as a raw material, putting the waste residue wet powder in a reactor; adding water to dilute; slowly injecting dilute nitric acid; continuously stirring the mixture till no air bubbles emit; performing press filtering; injecting ammonia water into the filtrate; continuously stirring the mixture; filtering; injecting carbon dioxide gas into the filtrate; continuously stirring the mixture; filtering the same; and drying the filter residue with a drier to obtain a finished product light calcium carbonate.
Owner:毛竹青
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