92 results about "Peridot" patented technology

The invention provides a novel thermal insulation coating material with no phase transfer problem, a melting point higher than the working temperature range, a thermal conductivity lower than that of zirconia, and a thermal expansion rate higher than that of zirconia. The thermal barrier coating material has an orthorhombic or monoclinic crystal structure derived from perovskite (for example, a platy perovskite structure represented by the composition formula A2B2O7), or a c-axis/a-axis ratio of 3 or more The composition of the tetragonal layered structure (such as K2NiF4 structure and Sr3Ti2O7 structure, Sr4Ti3O10 structure), and the composition represented by the composition formula LaTaO4, and the composition with the composition formula M2SiO4 or (MM') 2SiO4 (wherein M, M 'is a divalent metal element) composition of the olivine structure represented as the main body.

The invention relates to MgO-SiC-C refractory material synthesized by forsterite-C and a method. The technical proposal to be adopted is as follows: firstly, forsterite mineral powder and industrial carbon powder are blended according to molar ratio of 1: (1-5); and then the mixture is added with 4 to 10 wt% of bonding agent, stirred or mulled for 10 to 30 minutes, pressed to be formed and dried; and finally under the Ar gas condition, the mixture is sintered in the sintering temperature of 1530 to 1800 DEG C with heat preservation for 2 to 8 hours to obtain MgO-SiC-C refractory material synthesized by forsterite-C. The invention is characterized by comparatively simple processing technique, low producing cost, high producing efficiency, wide raw material source and being capable of reducing energy consumption of high temperature synthesis reaction. The prepared MgO-SiC-C refractory material has the advantages of excellent high temperature performance, anti-corrosion and good durability.

The invention discloses a castable for manufacturing a coke tank lining. The castable comprises, by weight, 10-22% of high-alumina bauxite having a particle size of 5-8 mm, 20-38% of calcium hexaaluminate having a particle size of 3-5 mm, 6-10% of calcined quartz having a particle size of 1-3 mm, 11-21% of forsterite having a particle size of 1 mm or less, 9-19% of magnesium aluminate spinel having a particle size of 180 meshes, 2-7% of ethyl silicate, 2-10% of hydrated alumina having a particle size of below 0.088 mm, 1-4% of dextrin and 1-3% of a water reducer. The present invention also discloses a method for manufacturing the coke tank lining. The castable of the invention can meet the internal use conditions of the coke tank, and the coke tank lining made from the castable has the advantages of good resistance to the high temperature, wear and thermal shock, low thermal conduction coefficient, long service life, low price and energy saving; and the method has the advantages of simplicity, and easiness in industrialize production.

A method of solidifying and detoxifying a soil, incinerated ash and coal ash to yield a solidified substance detoxified to a level complying with the environmental standards and a method of detoxifying polluted water containing dioxins and polluted water containing PCB are provided. First solidifying and detoxifying agent contains light burnt magnesite as component (1) and chrysolite powder as component (2), in which a ratio by weight of the component (1) and the component (2) is 1:5 to 5:1, preferably 1:3 to 3:1, more preferably 1:2 to 2:1 and is the solidifying and detoxifying agent applied to one kind selected from soil, incinerated ash and coal ash as well as polluted water containing dioxins and polluted water containing PCB. Other solidifying and detoxifying agent further contains as an additional component a fused phosphate fertilizer and titanium dioxide powder as well as anhydrous gypsum powder, light burnt dolomite and/or calcined lime powder.

The invention relates to a MgO-SiC-C fireproof casting material based on forsterite-C and a preparation method thereof. In the technical proposal, forsterite and C powder are mixed according to the mol ratio of (1 to 4) to (3 to 6), and a binder of 1 to 10 percent of the mixture by weight is added. After the mixture is beaten, moulded and dried, the mixture is synthesized into MgO-SiC-C material for two to eight hours at the temperature of 1450 to 1700 DEG C under the reducing atmosphere. 10-25 weight percent of 10-5mm granule, 15-25 percent weight of 5-3mm granule, 15-25 weight percent of 3-1mm granule, 10-20 weight percent of 1-0mm granule, 25-35 weight percent of 0.1-0mm fine powder are mixed with 2-8 weight percent of the binder, and are beaten uniformly, thus getting the MgO-SiC-C fireproof casting material. The manufacturing cost of the invention is low; the process is simple; and the fireproof casting material prepared has good performance, and is widely applied.

The invention belongs to the ilmenite flotation technology, and particularly relates to a pyroxene peridotite type ilmenite depressing agent and a preparation method of the pyroxene peridotite type ilmenite depressing agent. The preparation method of the pyroxene peridotite type ilmenite depressing agent comprises the step of carrying out oscillation, stir and curing on a mixed solution formed by sodium silicate, ferric nitrate and sulfuric acid to obtain the pyroxene peridotite type ilmenite depressing agent, wherein oscillation, stir and curing are carried out for 30-40min. The obtained pyroxene peridotite type ilmenite depressing agent comprises, by weight, 5-15 parts of the sodium silicate, 5-15 parts of the ferric nitrate and 1-10 parts of the sulfuric acid. The pyroxene peridotite type ilmenite depressing agent obtained through the preparation method has a good selective depressing effect on olivine and pyroxene, and has extremely important significance in obtaining of good technical indexes of titanium flotation of pyroxene peridotite type ilmenite.

The present disclosure provides a method for simultaneously measuring the value of forsterite and trace elements in olivine, comprising the following steps: Step S1: selecting samples, wherein the samples are olivine samples; Step S2: placing the samples in a sample chamber of LA-ICP-MS, and adjusting the position of the samples in the optical axis direction so that the laser beam is well focused; Step S3: optimizing the instrument to make the signal-to-noise ratio of ⁵⁷Fe be the best; Step S4: adopting LA-ICP-MS peak hopping mode and receiving all the mass peaks of the samples by single electron multiplier (SEM). The present disclosure overcomes the disadvantages of long test cycle and high test cost in the prior art.

The invention discloses a ceramic having rare earth elements and a preparation method thereof. The ceramic having the rare earth elements comprises the following components in parts by weight: 12-14 parts of flint clay, 15-18 parts of forsterite, 1-3 parts of calcium oxide, 4-6 parts of sodium oxide, 1-3 parts of titanium dioxide, 6-8 parts of purple grit mud, 35-38 parts of red clay, 30-40 parts of deionized water, 12-14 parts of kaolin, 6-8 parts of triethanolamine, 5-7 parts of rare earth elements, and 3-5 parts of auxiliaries. The rare earth elements comprise the following components in percentage by weight: 8-10% of lanthanum, 1-3% of cerium, 12-14% of praseodymium, 17-19% of neodymium, 13-17% of promethium, 2-6% of samarium, 8-15% of europium, 13-15% of dysprosium, and the balance of erbium and unavoidable impurities.

An environment-friendly magnesian dry material comprises sintered magnesia, fused magnesia, calcium forsterite, a binding agent, aluminum hydroxide micro powder, a high-temperature sintering agent, anexpanding agent, floating beads and bentonite in a mass ratio of (60-75): (20-30): (8-10): (15-25): (8-12): (2-4.5): (1-2): (0.5-1.5): (0.8-1.2). According to the invention, the proportion of each component of the dry material is optimized; by adopting the environment-friendly binding agent, the problem that the binding agent is decomposed into toxic and harmful substances under a high-temperature condition can be effectively solved, the dry material is more energy-saving and environment-friendly, the hardness requirement of the dry material in the using process can be ensured on the premisethat the dry material has no pungent smell in the using process and is more beneficial to the production environment, and the scouring resistance of the dry material is ensured.

The invention relates to a dry magnesia-calcia free-flowing refractory material and a preparation method thereof. The adopted technical proposal is as follows: the refractory material is prepared by stirring and mixing 20-50wt% of electrocast magnesia-calcia clinker or sintered magnesia-calcia clinker, 10-40wt% of electrocast magnesia or sintered magnesia, 0.5-20wt% of forsterite, 10-30wt% of sodium silicate hydrate particles, 1-8wt% of fine silicon dioxide powder, 0.5-5% of fine limestone powder and 1-5% of polyphosphate sodium particles. The dry magnesia-calcia free-flowing refractory material prepared by the method has good fluidity and fire resistance, convenient site operation and use and no environmental pollution and can be used for quickly patching a liner material of a smelting furnace.

The invention discloses a preparation method of a novel casting coating, and relates to the field of casting coatings. The coating comprises the following raw materials of 20-30 parts of graphite, 25-35 parts of forsterite, 5-10 parts of bentonite, 20-40 parts of a filler, 3-5 parts of an antifoaming agent, 2-5 parts of quartz sand and 20-30 parts of water. According to the method, due to the factthat the use amount of the forsterite is increased, so that the proportion of the graphite in the coating is reduced, the adhesive force between the coating and the surface of a mold is reduced, cleaning is easy, and the possibility that the graphite generates pores is greatly reduced; and meanwhile, due to the fact that the forsterite is rich in source and low in price, so that the reduction ofthe production cost is facilitated.

The invention discloses a stopper rod head and a preparation method thereof, wherein the stopper rod head comprises spinel particles with different particle sizes, graphite 199, graphite 899, an additive and a binding agent, and specifically comprises, by weight, 30-40% of white corundum 36#, 10-20% of white corundum 80#, 30-40% of white corundum 325#, 10-20% of graphite 199, 5-10% of graphite 899, 5-10% of an additive, and 10-15% of a binder. According to the invention, spinel is adopted to replace previous corundum to serve as the main material of the stopper rod head, and reacts with the additive to generate forsterite or calcium forsterite to seal part of the gas holes in the material, so that the additive is prevented from permeating into the material, the erosion resistance is improved, and the service life of the stopper rod head is prolonged through the special ratio.

The invention discloses a printing and dyeing wastewater purification agent and a preparation method thereof. The printing and dyeing wastewater purification agent comprises, by weight, 11-25 parts ofpolyacrylamide, 13-18 parts of tourmaline powder, 6-12 parts of konjac glucomannan, 10-25 parts of durian extract, 5-10 parts of mineral powder, 3-6 parts of a deodorant and 0.5-1 part of an oxidant.The mineral powder comprises, by weight, 5-8 parts of peridot powder, 2-6 parts of humic acid, 2-5 parts of granite powder, 1-3 parts of alkaline feldspar powder, 2-10 parts of basalt powder, 1-3 parts of quartzite powder and 2-5 parts of spodumene powder. The printing and dyeing wastewater purification agent can effectively reduce CODCr, ammonia nitrogen and SS content of waste water dischargedby a printing and dyeing plant. The treated water can satisfy the national emission standards. The preparation method is simple, is suitable for industrial production and has a high economic value.

A grain-oriented electrical steel sheet having excellent iron loss property is produced from a steel slab containing, by mass %, C: 0.002-0.15%, Si: 2.5-6.0%, Mn: 0.01-0.80%, Al: 0.010-0.050% and N: 0.003-0.020%, when: a heating rate between 500-700° C. In decarburization annealing is not less than 80° C./s, a surface roughness Ra of a work roll in final cold rolling is 0.01-3.0 μm, a total content of alkaline earth metals to MgO in annealing separator is 0-5 mass %, an average length L in rolling direction of passed crystal grains is not more than 25 mm, a ratio of crystal grains having a length in rolling direction of not less than 0.5 μm is 40-90%, and an existence ratio of alkaline earth metal sulfides having a size corresponding to circle of not less than 0.5 μm in a cross section of forsterite film is not more than 0.2/μm per unit length in sheet width direction.

The invention provides a filling method of double-layer stuffing sand. The filling method of the double-layer stuffing sand comprises the following step that an upper gate of a steel ladle is filled with a drainage substance, is characterized in that the upper layer of the drainage substance is stuffing sand A, the stuffing sand A is selected from one or more than two of forsterite stuffing sand,silicon stuffing sand, zirconium stuffing sand or chromite stuffing sand, the lower layer of a drainage substance is a stuffing sand B, the stuffing sand B comprises the following components of, in percentage by weight, 98%-99% of MgO, 0.3%-0.65% of SiO2, 0.2%-0.6% of Fe2O3, 0.3%-0.7% of C, 0.008%-0.012% of S and 0.06%-0.1% of H2O. According to the filling method, under the condition that the automatic casting rate of the molten steel is not affected, inclusions in the molten steel are reduced, and pollution to the environment is relieved.

The invention discloses a rapid sintering gunning mix for RH, which comprises the following components: 28.0-43.0 parts by weight of fused magnesite particles with the particle size of less than 5mm and greater than or equal to 3mm; 12.0-26.0 parts by weight of fused magnesite particles having a particle size of less than 3 mm and not less than 1 mm; 10.0-18.0 parts by weight of fused magnesite particles having a particle size of less than 1 mm and greater than or equal to 0.5 mm; 8.0-13.0 parts by weight of forsterite particles having a particle size of less than 1 mm and not less than 0.5 mm; 6.0-11.0 parts by weight of fused magnesite fine powder with a particle size of less than 0.088 mm; 2.0-7.0 parts by weight of forsterite fine powder with a particle size of less than 0.088 mm; 6.0 to 10.0 parts by weight of hydratable alumina micro powder; and 1.5 to 4.0 parts by weight of silica powder. The rapid sintering gunning mix also includes binding agent accounting for 4.5-5.5 wt% of the raw materials, and the water reducing agent accounting for 1.0-1.5 wt% of the raw materials. The invention also provides a preparation method of the rapid sintering gunning mix for RH.