380 results about "Baryte" patented technology

This invention relates to a aquosity industry anti-rust paint and its preparation method. According to weight it includes 8 to 11% aquosity acroleic acid modified epoxy, 33 to 40% acroleic acid latices, 0.1 to 0.3% defoamer, 0.05 to 0.15% wetting agent, 0.3 to 0.5% dispersant, 0.3 to 0.5% rust-resistant agent, 7.5 to 9% iron oxide red, 6 to 8% French chalk, 5 to 10% modified zinc phosphate, 2.5 to 10% trimerization aluminum phosphate, 3 to 3.5% precipitated baryte , 0.5 to 1% zinc oxide, 3 to 5% mica ferric oxide, alcohol ester twelve 1 to 2%, triethanolamine 1 to 2%, thickening agent 0.3 to 0.6%, preservative 0.05 to 0.1%, 5 to 20% de-ionized water, through pretreatment, color paste preparation and blending and adjusting to gain product.

A low grade fluorite and barite flotation separation method uses waterglass as the inhibitor for silicious mineral and calcium carbonate mineral; uses oleic acid as the collector for fluorite and barite; and uses starch, sodium sulphate, hydrochloric acid and sodium hexametaphosphate as the inhibitor for barite mineral. The invention can perform flotation separation of low grade fluorite and barite effectively; under the condition that the given fluorite grade is 33.92%-40.41%, and the barite grade is 34.67%-35.33%, by mixing, flotation and separation, can achieves the fluorite concentrate with grade of above 95% and recovery rate of 75.5%-78.5%, and the barite concentrate with grade of 92.3%-93.27% and recovery rate of 75.2%-79.73%.

The invention belongs to the technical field of mineral engineering and provides a mineral processing technology for recycling fluorite from baotite, magnetite and tailing. In the tailing, mineral particle size of the fluorite is thin, iron-bearing mineral, rare-earth mineral, gangue mineral and the fluorite mineral are closely symbiotic and floatability of minerals such as rear earth, barite, apatite, calcite and dolomite is close to the fluorite mineral, so that separation of the fluorite mineral is difficult. According to the mineral processing technology for recycling the fluorite from the baotite, the magnetite and the tailing, priority desulfuration, rear earth flotation, ore grinding, iron selection through magnetic separation, fluorite selection through direct flotation and a reverse flotation sorting technology are performed on the magnetite and the tailing to enable pyrite, the rare earth, the iron-bearing mineral and the fluorite to be picked out in sections, efficient, high selective, easy-to-operate inhibitor and collecting agent combination is utilized in sorting of fluorite which is mostly performed monomer separation, so that fine fluorite of high grade and high recovery rate is obtained, a purpose of synthetically recycling valuable minerals is achieved, and effective separation of the fluorite mineral and the gangue mineral is achieved.

The invention relates to a method to produce equivalent material of iron crystal sand cemented rock soil that uses iron ore, barite powder and quartz sand as main aggregate, uses solution that is made up from rosin and alcohol as cementing agent, and uses gesso as regulator. Whisking the iron ore, barite powder and quartz sand, gesso, resin-alcohol solution to equal, pouring into steel mould, pressing the mixture, opening the mould, drying for 2-3 days, the invention could be gained. The invention has the advantages of high unit weight, large range of mechanics parameter, easy to process and low cost.

The invention discloses strong-inhibition efficient shielding temporary plugging protection reservoir drilling fluid. The drilling fluid comprises the following components by weight percent: 2-5% of new shielding temporary plugging agent, 3-7% of inorganic salt inhibitor, 3-7% of organic inhibitor, 0.3-0.5% of low-viscosity polyanionic cellulose, 0.1-0.3% of high-viscosity polyanionic cellulose, 0.1-0.3% of viscosity enhancer, 0-3% of barite and the balance water, wherein NaOH is added to adjust the pH value to 9-10. The drilling fluid is used to effectively and temporarily plug the micro-cracks of the reservoir, has efficient plugging property and shallow layer property and ensures that some solid particles of the later drilling fluid can not enter the reservoir, thus the reservoir can be protected; and the drilling fluid has very good inhibitory property, and can balance the formation pressure and have the function of stabilizing the well wall.

The invention relates to a gas oil base invert oil-emulsion drilling fluid and a preparation method, wherein the total volume of gas oil and calcium chloride aqueous solution is 100 parts: the volume ratio of oil phase to water phase is between 95:5 and 70:30, and the concentration of calcium chloride aqueous solution is 5%-saturation; the required gas oil, primary emulsion, auxiliary emulsion and wetting agent are added into a high speed mixing beaker, and are mixed at high speed for 2-5 minutes; the calcium chloride aqueous solution is added and mixed at high speed for 15 minutes; organic soil, calcium oxide and a fluid loss agent are added and mixed at high speed for 10 minutes; and the required amount of barite is added according to density, and is mixed at high speed for 25 minutes. The gas oil base invert oil-emulsion drilling fluid is used for overcoming the defects of the existing gas oil base drilling fluid and solving the problems of the salt resistance and temperature resistance of the gas oil base drilling fluid, and can resist the temperature above 200 DEG C.

The invention relates to a staged flotation method for separating low-grade calcite-barite-fluorite type ore, belonging to the technical field of mineral processing. The staged flotation method comprises the following steps: crushing raw ore of low-grade fluorite to -1.0mm, feeding the crushed raw ore to a ball grinder, grinding and adding water to prepare raw ore pulp, wherein a part finely ground to -0.074mm accounts for 70-95 percent; putting the ore pulp into a desliming floatation machine, adding sodium carbonate serving as a regulator while stirring, and then adding sodium silicate and a collecting agent CA to adjust the pH value of the ore pulp; feeding foams obtained by desliming floatation to a rougher flotation machine, adding a combined inhibitor YS first and stirring, then adding a direct flotation collecting agent CA and stirring, carrying out direct rougher flotation, and separating barite-containing tailings; carrying out direct fine flotation on rough concentrate obtained by direct rougher flotation to obtain fluorite concentrate, carrying out direct fine flotation on the tailings obtained by direct rougher flotation to obtain barite concentrate. The staged flotation process provided by the invention has a favorable separation effect aiming at barite-fluorite ore, and achieves the purposes of saving energy, reducing emission and easily realizing comprehensive recycling of barite and fluorite.

The invention relates to a friction brake disk of a carbon-base double-speed electric-block and a preparation method thereof, aiming to provide the brake disk which has large brake moment, high shear strength, high temperature resistance, wear resistance, environmental protection and low noise. The preparation method has the advantages of simple technology, convenient manufacture and low cost. The invention has the technical scheme that the friction brake disk of the double-speed electric-block comprises an iron-base frame and a friction material layer which is attached to the brake surface of the iron-base frame, wherein the friction material layer comprises modified phenol-formaldehyde resin, aramid fiber, short carbon fiber, SACF mineral fiber, precipitated baryte, modified bauxite, metal sulfides, hydrogenated nitrile-butadiene rubber, metal fiber, nano calcium carbonate, stearic acid, vulcanization accelerator, medium-carbon frictional property modifier and melamine-cashew nut shell oil. The preparation method comprises the following steps: (1) weighing raw materials; (2) synthetically kneading the raw materials; (3) compression molding; (4) thermocuring; and (5) machining.

The invention relates to the field of mineral materials, in particular to a method for preparing ultrafine high-whiteness active barite powder. The method comprises the following steps of: (1) preparing pulp from 325-mesh barite powder, and performing wet ultrafine grinding until the particle size is less than 10mu m; (2) filtering the barite pulp subjected to wet ultrafine grinding, and drying; (3) adding mixed acid into the dried ultrafine barite powder, and performing oxidation leaching reaction with stirring, wherein the mixed acid is a mixed solution of sulfuric acid, hydrofluoric acid and oxalic acid; (4) filtering the barite powder subjected to oxidation leaching reaction by the mixed acid, and washing until the pH is 6 to 7; and (5) performing pressure filtration, and drying to obtain the ultrafine high-whiteness active barite powder. The preparation method is simple and controllable and easy to popularize, equipment can be localized completely, over 99 percent of prepared barite product has the particle size of -10mu m, and the whiteness is over 90 percent.

The invention discloses a method for treating chromium-containing wastewater by using barite adsorbent. The method comprises the following steps of: fusing, crushing and screening a barite mineral material, reacting the barite mineral material by using ferric chloride solution to generate the barite adsorbent for removing chromium ions from sewage containing 50 to 150 mg/L of chromium compound, and shaking the barite adsorbent for 1 hour in a 20 DEG C water bath thermostatic oscillator when the pH is 3 to 4, wherein the removal rate of the chromium ions in the sewage is over 99 percent; and adding a proper amount of barium chloride powder into the barite adsorbent for treating the high chromium content sewage so as to improve the removal rate of the chromium ions. The method has the advantages that: the barite is a most common barium-rich sulfate mineral, the globe surface has rich resources and the cost is low, so the method is convenient for popularization and application; and the barite adsorbent has simple preparation process, convenient operation and high adsorption rate of the chromium ions in the wastewater, can be repeatedly regenerated and recycled, and meets the energy conservation and emission reduction requirements.

The invention relates to a method for recovering barite from lead and zinc tailings. The method includes the following steps: pyrite flotation is carried out to obtain pyrite flotation tailings; barite rougher flotation is carried out to obtain barite rough concentrates and barite rougher flotation tailings; scavenging is carried out on the barite rougher flotation tailings to obtain flotation tailings; and barite rough concentrate selection is carried out to obtain barite concentrates. The method is a beneficiation method which is relatively lower in medicament cost and processing cost and small in environmental pollution, and can use tailing water repeatedly; and the method is suitable for low-grade barite ore with the dolomite content ranging from 55% to 65% and the barite grade ranging from 10% to 15%.0

The invention discloses a method of extracting tungsten from high-barium tungsten ore. The method includes: mixing the high-barium tungsten ore and a certain amount of SiO2 and Na2CO3 to obtain mixture, roasting the mixture at the high temperature, and leaching roasting slag with Na2CO3 to obtain tungsten. By roasting the Na2CO3 and SiO2, the structure of the high-barium tungsten ore is fully broken to obtain stable (Ba or Ca)2SiO4 slag which is leached with high-concentration Na2CO3, water-soluble calcium and barium ions in roasting material are deposited, deposition of tungsten ions is prevented, leaching rate of the tungsten is greatly increased, reaching greater than 95%, and the problem that the high-tension alkaline leaching methods of the prior art fail to break the barite structure, leading to low leaching rate, is solved. The method according to the technical scheme is simple to operate, raw materials are cheap, processing can be performed with traditional equipment, and the method fully satisfies industrial production.

A process adopting barite-fluorite paragenic ore for preparing barite powder comprises the steps of (1), after crushing, screening and classifying the raw barite-fluorite paragenic ore, carrying out classification and gravity concentration; (2), dehydrating and drying the concentrate subjected to classification and gravity concentration in the step (1) so as to obtain barite rough concentrate; (3), separately carrying out photoelectric separation on the barite rough concentrate with the size fraction of 1-3 mm and 3-6 mm obtained in the step (2) so as to obtain barite concentrate with the whiteness classified; (4), grinding the barite rough concentrate with the size fraction smaller than 1 mm obtained in the step (2), the barite concentrate with the whiteness smaller than 88% obtained in the step (3) and the barite concentrate with the whiteness greater than or equal to 88% obtained in the step (3) so as to obtain the barite powder. The process has the advantages that the procedures are simple, the investment is small, the energy consumption is low, and gravity concentration waste water can be reused after being clarified so that environmental friendliness can be achieved. The yield of the barite concentrate with the whiteness greater than or equal to 88% is high, and the barite concentrate can be used in the high-end fields such as coatings, oil paint, rubber and the national defense industry after being ground to form powder.

The invention relates to a soil-phase-free oil-based drilling fluid. The soil-phase-free oil-based drilling fluid is prepared from the following raw materials in percentage by weight: 50-85 percent of base oil, 5-30 percent of CaCl2 saline, 1-4 percent of composite type emulsifier G326-HEM, 1-5 percent of filtrate reducer G328, 0.5-3 percent of alkalinity conditioning agent, 0.5-3 percent of tackifier, 0.2-2 percent of viscosifier and the balance of barite. According to the soil-phase-free oil-based drilling fluid, the demulsification voltage is higher than 800V, and the temperature resistance of higher than 180 DEG C is achieved; the formula is simple, the field operation and maintenance are convenient, and the soil-phase-free oil-based drilling fluid has good rheological property in the absence of a wetting agent under the condition of high density; the system is widely applicable to the base oil and can be used in mineral oil or gaseous oil; and a novel method is provided for lowering the well leakage loss of the oil-based drilling fluid, the cost of the drilling fluid is also remarkably lowered, good economic and social benefits are obtained, and thus the soil-phase-free oil-based drilling fluid is worthy of popularization and application.

The invention relates to an evaluation mud cake for shale water-based drilling fluid blocking performance and a preparation method. An effective blocking agent can be preferentially selected to evaluate shale well water-based drilling fluid blocking performance. According to the technical scheme, the evaluation mud cake is prepared from 100 g of barite, 10 g of polyacrylamide, 50 g of sodium polyacrylate, 200 g of API barite, 7 g of a hydrophobic associated polymer and 1000 g of tap water. The preparation method includes the steps that firstly, 1000 g of tap water is weighed, 100 g of barite is added under low-speed stirring, and high-speed stirring is carried out for 30 min; then, 10 g polyacrylamide is added, and high-speed stirring is carried out for 30 min; 50 g of sodium polyacrylate is added, and high-speed stirring is carried out for 30 min; 200 g of API barite is added, and stirring is carried out for 30 min; finally, 7 g of the hydrophobic associated polymer is added, stirring is carried out for 30 min, the mixture is put into a vessel of a water loss meter, pressing is carried out for 2 h at the pressure of 3.5 Mpa and the normal temperature, and the evaluation mud cake is obtained. Only a few kinds of raw materials are used at a low dose for preparing the evaluation mud cake, and the evaluation method is simple and efficient.

A Ba-slag cement features that the Ba slag generated in preparing barium salt from barite is used as one of its raw materials. Its advantages are high performance and radiation-resistant effect.

The invention discloses a combined ore dressing method for waste materials containing low-grade barite. The method comprises the following steps that 1, powdery materials are prepared into ore pulp by adding water; 2, the ore pulp obtained in the step 1 is fed into gravity dressing equipment for dressing; 3, pulp mixing is conducted on heavy ore obtained in the step 2, obtained heavy ore pulp is fed into a hydrocyclone for classifying to obtain a sand setting product and an overflow product, and the sand setting product enters ore grinding equipment for ore grinding; 4, mixing and desliming are conducted on the ore grinding product and the overflow product which are obtained in the step 3, and pulp mixing is conducted after desliming; 5, ore pulp obtained in the step 4 is fed into a magnetic separator for separation; 6, pulp mixing is conducted on a non-magnetic product obtained in the step 5, and obtained ore pulp is fed into a flotation machine for 4-6-segment grading flotation; 7, filtering, reagent removing and whitening are conducted on a barite powder product obtained in the step 6, and a barite product is obtained. According to the method, the qualified barite powder product can be obtained from the waste materials, the method is applied to the industries of chemical engineering, petroleum drilling, medicine and the like, and the economical efficiency of secondary resource utilization is improved.

The invention discloses a material of a high-wear-resistance ceramic automobile brake block, and preparation and molding methods of the material. The material of the high-wear-resistance ceramic automobile brake block comprises the following components in percentage by weight: 7-10% of cryolite, 1.5-2% of ferric sulfide, 1-3% of iron oxide red, 2.5-4% of iron oxide black, 9-12% of barite, 16-18% of binding agent, and the balance of high-titanium bauxite homogenized material composed of bauxite and titanium dioxide. According to the material disclosed by the invention, a multi-component friction modifying agent and a filler are added, the adding amount of each component is optimized and the grain diameter of powder is optimized, so as to adjust friction and abrasion behaviors; and a resin bonding agent is used for compounding a plurality of the functional components with a steel back to sufficiently express the synergistic effect of each component. The high-wear-resistance ceramic automobile brake block prepared by the material and the method disclosed by the invention is an environment-friendly friction material and has the advantages of low noise, high friction coefficient, small heat fading, long service life, small damages to mating plates and the like.

The invention provides a water-based epoxy paint and a preparation method thereof. The paint comprises an amino resin, a leveling agent, distilled water, a water-based epoxy acrylic resin, a dispersing agent, a defoaming agent, iron oxide black, superfine talcum powder, precipitated baryte, zinc phosphate, a rust inhibitor and the like; and a nano MoS2 anti-wear agent and a nano CaCO3 ultraviolet absorbent are further added to enhance the properties. By reasonably designing the component types and contents, the thickness of the paint film can reach 100 mu m above, the water resistance is greater than 240 hours, the transmittivity for ultraviolet light with the wavelength of 290-400nm is less than 0.4, the wear-resistant revolution number is up to 1000-1400, the mass loss of the paint film is less than 0.07 g/100r, and the salt spray resistance is greater than 200 hours. The paint can be brushed on the internal and external walls of an iron building, has excellent protective effect, and is especially suitable for protecting iron building cultural relics.

A method of smoothing the surface of a ceramic matrix composite material part that presents a surface that is undulating and rough. The method includes depositing a refractory vitreous coating on the surface of the part, the vitreous coating essentially containing silica, alumina, baryte, and lime.

The invention discloses a method for preparing a mineral inhibitor for barite, which comprises the steps of: putting epoxy chloropropane and trimethylamine into a flat bottom flask according to the molar ratio of the epoxy chloropropane to the trimethylamine being 1-2:2-6; putting the flat bottom flask into an ice bath; closely stirring the mixture to react for 2 to 3h; standing and layering the obtained product, then taking a supernatant liquid as an intermediate product for standby; putting starch into the flat bottom flask; adding the intermediate product into the starch, taking HCl solution as a catalyst, and adding Na2SO4 which accounts for 0.1 to 0.2 percent of the mass of the total system; putting the mixture in a water bath with a temperature of between 70 and 85 DEG C, and heating the mixture to react for 3 to 4h; and then drying to obtain a powdery substance, namely the inhibitor. The inhibitor can effectively inhibit the barite in fluorite ore concentrate, can improve the grade of the fluorite ore concentrate, and has simple flow, small medicament dosage and low energy consumption.

The invention relates to a solvent-free epoxy coating for the inner wall of a petroleum storage tank and a preparation method. Solution A comprises E-51 epoxy resin, butyl glycidyl ether, KH-560 silane coupling agent, ALCOPHOR827 anti-corrosion auxiliary agent, BYK-085 flatting agent, Efka-722 defoamer, 400 mesh rutile type titanium white, 325 mesh baryte powder, 400 mesh talcum powder, carbon black and 881-B organic bentonite. Solution B comprises polyamide EU8235 epoxy hardener, dimethylbenzene and normal butanol. The weight percent of the solution A is 80% to 90%. The solvent-free epoxy coating is safe and environment friendly, the coating volume shrinkage is 1.15% to 1.5%, the pull-off adhesion is 16.5MPa to 20.0MPa, a chemical media resistance 90d paint film is in good condition, anda salt spray resistance 3000h paint film is in good condition. With the adoption of the solvent-free epoxy coating, corrosion of the storage tank can be greatly reduced, and the service life of the storage tank can be greatly prolonged.