Abstract:
Proppant material for hydraulic fracturing is provided. The particles of the proppant are formed by drip casting. A slurry of finely divided ceramic particles is flowed through nozzles and formed into droplets under the influence of vibration. Uniform sized, smooth surface, spherical green particles are formed. The green particles are dried and sintered to form the proppant. The proppant is used in the process of hydraulic fracturing of wells.
Abstract:
An improvement in a mixture for forming into a body that is to be fired into a “whiteware ceramic product” wherein the mixture is a compound of clay and other minerals with a ferric oxide content of less than about 5.0% by weight of the dry mixture. The improvement includes adding to the mixture a binder in the form of a combination of protein and a vegetable flour with an equivalent gram strength of at least 30 grams and a protein content of 20-50% of the binder, where the binder is in the range of 0.05% to 0.50% by weight of the dry mixture.
Abstract:
A method for manufacturing sharp spine-shaped projections on ceramic includes forming projections by applying a first soil water on the outside of the half-dried ceramic, forming projection roots; and growing projections by applying a second soil water on a plurality of the projection roots fifty to one hundred times using the brush and letting the projections dry at 15˜20° C., and 60˜70% of relative humidity for 15˜25 minutes in the shade after the application. Bright and mysterious various ceramic patterns are achieved by controlling water content of a first soil water to control projections density, controlling the number of a second soil water applications to control projections' size, selecting the direction of applications to form projections bent toward various directions and mixing pigments with soil water at proper time with proper mixing ratios to form projections with various colors.
Abstract:
The invention provides a cost-effective and practical acid resistant porcelain enamel with antimicrobial properties for steel substrates. The invention provides a porcelain enamel coating which has an optimum range of zinc content and other enamel constituents wherein outstanding antimicrobial performance is achieved without significant degradation of other important properties such as acid resistance.
Abstract:
A method of producing alumina having a low soda content and excellent sintering properties includes the steps of adding a soda removal agent to alumina source material and calcining the alumina source material in a calciner (2), using a dust collector (5) to collect calcined alumina source material dust contained in the exhaust gas, discharging a portion of the collected dust out of the system, slurrying another portion of the collected dust in a slurrifier (10) while controlling slurry pH, washing and filtering the slurried dust and recirculating it back to the calciner, recirculating still another portion of the collected dust together with a mineralizing agent to the calciner, and removing the low soda alumina after the calcination.
Abstract:
A process for making an alkaline resistant material comprises the steps of grinding together 0-40% light magnesia, 0-80% roasted magnesia, 10-54% ceramic clay, 0-9% limestone, 1-4% water glass, 0-1.5% carboxymethyl cellusolve, 0-27% talc, 0-3% calcium or barium carbonate to a particle size of less than 50 microns, mixing the ground mixture with water to produce a paste containing
Abstract translation:制备耐碱材料的方法包括以下步骤:将0-40%的轻质氧化镁,0-80%的焙烧氧化镁,10-54%的陶瓷粘土,0-9%的石灰石,1-4%的水玻璃,0- 1.5%羧甲基葡聚糖,0-27%滑石,0-3%钙或碳酸钡,至粒径小于50微米,将研磨的混合物与水混合,得到含有<23% 水,将糊状物成形为所需形状,在110摄氏度的温度下干燥成型产品,并将烘干的成型产品在1350摄氏度的窑炉中焙烧。 得到的耐碱陶瓷含有25-76重量%的MgO,13-47重量%的SiO 2,5-20重量%的Al 2 O 3和1-10重量%的Fe 2 O 3,CaO,K 2 O和/或Na 2 O,其中镁橄榄石和尖晶石是主要的 结晶相。
Abstract:
The present invention relates to novel ceramic media or ceramic media coatings comprising mainly magnesia, silicon dioxide, and alumina, with forsterite and spinel as the dominant crystalline phases, which show high resistance to alkali attack at high temperature. Ceramic materials having these characteristics are particularly well suited for use as heat-exchange media in regenerative thermal oxidizers (RTOs) for the wood process industry.
Abstract:
Bright noble metal preparations for the production of bright noble metal decoration contain at least one noble metal compound and at least one non-noble metal as flux dissolved in a carrier medium. Preparations according to the invention, which are stoved at 1050 to 1300° C., contain as flux at least one cobalt compound in a quantity of 0.3 to 1.0 wt. %, calculated as CoO, and a chromium compound in a quantity of 0.2 to 0.7 wt. %, calculated as Cr2O3. The ratio by weight of Cr2O3 to CoO is in the range from 1.0-2.3.
Abstract:
The present invention refers to glass-ceramics consisting of the mixtures (I): ZrO2nullSiO2nullMeIIO, or (II) SiO2nullMeIIIO2nullMeIIO, wherein: MeII is chosen in the group consisting of: Ca, Ba, Mg, Zn or mixture thereof; MeIII is chosen in the group consisting of Al, B or mixtures thereof; each of the above said constituents being present in determined quantities; the invention refers also to a process for preparing the glass-ceramics above defined; porcelain stonewares and glazes containing them and their use for preparing ceramic items.
Abstract translation:本发明涉及由混合物(I):ZrO 2 -SiO 2 -Me O O或(II)SiO 2 -Me 3 O 2 -Me 2 O组成的玻璃陶瓷,其中:Me II 选自Ca,Ba,Mg,Zn或其混合物; Me III选自Al,B或其混合物; 上述各成分以确定的量存在; 本发明还涉及上述制备玻璃陶瓷的方法; 瓷器石釉和含有它们的釉料及其用于制备陶瓷制品的用途。
Abstract:
The present invention provides a method of forming a coating including a metalloxane polymer on a substrate. The method according to the invention includes forming a non-aqueous mixture including an alkoxide, a siloxane, and an organo-metallic catalyst, applying the mixture to the substrate, and heating the substrate to cure the coating. The mixture can also comprise one or more fillers including ceramic powders, glass powders, metal powders, and pigments The method can be used to apply coatings to metal, glass, porcelain enamel, ceramic, and polymeric substrates.