1. A further restriction on the clinical use of alumina is the response of tissues to its implantation.

2. It is the excellent wear characteristics of alumina which are the principal advantage in artificial hip systems.

3. However, the alumina layers spall as the temperature increases.

4. Modified zirconia alumina stationary phase 2,4,6 trinitrophenol.

5. Firebrick coated with alumina is used as column substrate for the separation of gaseous hydrocarbon mixtures.

6. This article analyzes current state and development of alumina techno logy in China.

7. The parameters of porous Alumina membrane, such as aperture, hole density and aspect ratio, membrane thickness, had been effected by many factors mentioned above.

8. The tube alumina substrates for ceramic membrane with good properties were developed, using paraffin and polyethylene as plasticizing agent.

9. By comparasion with hydrolysis properties and alumina performances of two kinds of alkoxide, it is found that the drying temperature and hydrolysis ratios are less impacted on the solid alkoxide.

10. The preparation of porous anodic alumina film is studied with sulfuric acid as electrolyte and the morphology of the film is characterized by field-emission scanning electron microscope(FE-SEM).

11. Results The early common pathological change of alumina pneumoconiosis was the dust spots.

12. The material removing mechanism of 90% alumina is intergranular fracture caused by network cracks induced by impact.

13. High temperature reaction of quartz, alumina, kaolin and sodium carbonate was examined.

14. With very low loss at high frequency, alumina(96%, 99%), beryllium oxide(BeO)and aluminium nitride(AlN)ceramics are excellent substrates for microwave and RF circuits.

15. The crude products were purified by neutral alumina column Chromatography with dichloromethane containing pyridine as eluent.

16. Alumina or aluminosilicate fibers reinforced Al Si alloy matrix composite have more excellent synthetical properties at elevated temperature than the matrix alloys.

17. Featured with diaspore, high alumina, high silicon and low iron, the bauxite in Shanxi have to be digested under higher temperature and denser soda in Bayer process.

18. In older patients this effect can cause bone loss and loosening of alumina based implants.

19. It has three distinct stages of processing - bauxite mining, alumina refining and ingot smelting.

20. The basic approach is to apply a slurry of fine alumina powder to a model of the tooth stub.

21. A cellulose-based paste is being applied to the gypsum deposits followed by a micro-sanding with fine alumina powder.

22. Now he had to find a solvent for the alumina clay.

23. Fig. 1. Scanning electron micrograph showing the distribution of the angular grains of alumina in Inceram.

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24. Scanning electron micrograph showing the distribution of the angular grains of alumina in Inceram.

25. These unique circuits contain semiconductor devices as well as other discrete electronic components soldered on a thin alumina substrate.

26. Copper oxide forms an external oxide layer beyond the alumina - rich layer.

27. The cordierite glass - ceramics were prepared using high alumina fly ash as the main raw material.

28. The dust content in carbon dioxide gas is an important index used in the process step of carbonating decomposition in alumina production.

29. Soft lithography and anodic process were combined to prepare the pattern porous alumina successfully.

30. The addition of yarns, which may be glass or alumina mono or multifilament yarns, increases the shock resistance of the ceramic filter element produced.

31. Factors influencing pore structure of amorphous silica - alumina prepared by carbonization were investigated.

32. The carbothermal reduction nitridation reaction was promoted greatly after the milling of alumina for 20 hours.

33. Special industrial ceramic 、 magnet material and machining parts , such as Zirconia, Alumina, NdFeB and AlNiCo products.

34. A method for increasing the floccule size and volume of alumina trihydrate during the Bayer processing of bauxite ore using a flocculant in conjunction with a water continuous polymer.

35. The porous alumina membrane is characterized by using X - ray diffraction, scanning electron microscopy and UV - VIS - NIR spectrophotometer.

36. The synthesis methods of magnesia - alumina spinel are electro - fusion and sintering process.

37. QVC products are used by polyvinyl chloride, alumina, detergent and pulp and paper manufacturers.

38. The design of industrialized production of agate - grade alumina - hydroxide was briefly introduced.

39. The results indicate that unfired brick is better than fired high alumina brick in application.

40. In present paper the Surface electric properties of alumina trihydrate ( ATH ) and its effect on adsorption properties of surfactants on ATH / Water interface were examined.

41. Typically, these membranes are MADE from porous carbon, zirconium oxide, or alumina, although a wide range of materials are being tested.

42. White aluminium oxide abrasive is electrically fused in an arc furnace processed alumina as raw material.

43. The commonly brick, semisilica brick , brick, high - alumina brick, chrome brick, magnesia brick, carbon brick, etc.

44. Sodium metaaluminate as a regenerant has better regeneration effect on the activated alumina that is saturated and has adsorption capacity.

45. The refractory insulating bricks were produced , taking alumina, soft clay, cyanite al as raw materials.

46. This paper introduces the application of pouring material of high - alumina - spinel on ladle lining for continuous casting.

47. To alumina, the production of high-frequency ceramic - based industrial ceramics.

48. Ultrafine active alumina was prepared by calcinating nano-sized pseudoboehmite which was gotten by chemical deposition method under strong agitation.

49. Porous alumina templates were obtained by one and two - step anodization respectively.

50. The present invention discloses alumina producing process, and is especially the causticization process in alumina producing Bayer process.

51. But the remains is difficult to utilize due to its low mass ratio of alumina to silica, high content of sulphide, divergent resources and poor mining conditions.

52. My stomach often feels ache slightly, eat hydrated alumina to be no good all right?

53. With high alumina cement and floating particle as main starting material, a new unfired floating particle insulating refractory product has been developed.

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54. To sum up the effect of chlorion corrosion on the process equipments and index in Bayer process alumina production, and analyse the main reasons of equipments unefficient caused by chlorion corrosion.

55. For instance, a mixture of substances in solution is passed slowly down a long column packed with alumina.

56. The properties of some refractories contaning synthetic magnesia - alumina spinel and theirapplieations are discussed in this paper.

57. Invisible braces are made of translucent polycrystalline alumina ( TPA ).

58. For production of alumina by alkaline process, silicon in bauxite is the most harmful impurity.

59. AIM: To observe the regularity of the influence of veneering porcelain thickness on the color of the glass infiltration alumina core ceramic and veneering porcelain complex.

60. There isn't any disrepair on the microcosmic surface of CAF, and the sol can immerge into the holes of the alumina foil.

61. As a result, the addition of alumina enhances the decomposition of zircon.

62. Calcium silicate slag is the residue from sinter of fly ash with lime stone after alumina extracted by solution of sodium carbonate.

63. Considering the enhancement of alumina production process, key research topics about the structural characters and decomposition mechanism of supersaturated sodium aluminate solution are put forward.

64. The invention discloses a heat supply method and a device in a canalization dissolving-out process in an alumina plant.

65. Activated carbon, alumina are often used to remove many types of organic materials from aqueous streams.

66. The mechanics properties and microstructure of self - flow alumina - spinel castable have been investigated.

67. The equivalent circuit models corresponding to these anodic alumina membranes were established.

68. Polishing using the entire surface of tool is possible thanks to the braided Alumina Fiber structure.

69. Morgan's ignitor and sensor products are based on high purity alumina or steatite.

70. Using diaspore as raw material, alumina ceramic coating was prepared by plasma spray plus laser remelting technique.

71. On the background of production process of alumina in Zhongzhou Brach China Aluminium, this paper mainly does research in the establishment and application of the predictive model of quality.

72. It was swiftly to obtain the thickness of alumina film by using of it's dielectric property and capacitor model, which was validated by means of EM, electric quantity and volt-ampere.

73. Using aluminum alkoxide as raw material, pore diameters of mesoporous alumina were adjusted by three different templates. The role of template was discussed.

74. From the results, it can be found that sawing forces and force ratio for alumina ceramic were both larger than gem.

75. The stones were considered to be the corrosion products of refractory materials due to the fact that they exhibit mullite or nephelite characteristics under the microscope and are rich in alumina.

76. Its main raw material is a bayer alumina, which is electrically fused in high temperature.

77. According to the eduction pipe outflowing phenomenon of the electrobath alumina bin, through analyzed the bin and feeder structure , working process and conditions, the outflowing reasons are found.

78. From the results, solution mechanism of alumina in molten cryolite was discussed.

79. The alumina ceramics is of good properties and widely used.

80. Simply, the Hall-Heroult process is the method by which alumina is separated into its component parts of aluminum metal and oxygen gas by electrolytic reduction.

81. The refractory insulating bricks were produced by plastic moulding, taking alumina, soft clay, cyanite et al as raw materials.

82. Tailing is the solid waste residue produced in alumina production.

83. Through the concept of primary crystal size and testing of primary crystal size and flowability, water demand of high-temperature alumina powder is studied and discussed.

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84. Anodic oxide membranes with nano-nano hierarchical structures are fabricated on the surface of pure alumina by two-step anodization.

85. The influence of the level of alumina trihydrate, plasticizer and coupling agent on the electrical property of EPDM was studied.

86. At the same time, the effect of the concentration of sodium metaaluminate and regeneration time on the defluoridation capacity of activated alumina after being regenerated has been studied.

87. It is proved that alumina nano-fibers are formed from the porous layer, while totally different behaviors of the barrier layer a.

88. A process for producing lithium-bearing alumina has been developed, which combines the digesting of lepidolite by lime with a process for producing alumina.

89. The present situation of Chinese bauxite resource and alumina industry is reviewed.

90. The alumina fiber can strengthen the HDPE when the compatibilizer is added into the polymer composite.

91. Now it is used in 14 large blast furnaces in microporous alumina - carbon brick has proven success.

92. Calcinating this salt at 1200 C results in its decomposition into alumina ( or aluminum oxide ).

93. Preparation of magnesia alumina spinel and its application in catalytic reaction were reviewed in this paper.

94. Hydroxyapatite method has advantage over the methods such as actived alumina, bone char and electrodialysis commonly used in defluorination of drinking water. It is for this re...

95. DURA-32 Zirconia Toughened Alumina (ZTA) bead was sintered from alumina powder and zirconium silicate powder.

96. Celite, alumina, XAD - 7, Kiselgel and Florisil were selected to absorb HRP.

97. The intelligent multi-control of alumina in aluminum reduction cell is investigated on the basis of the adaptive control and the practical operating conditions.

98. Each of Alcan's four business groups — Bauxite and Alumina, Primary Metal, Engineered Products and Packaging — holds strong market positions in the Americas, Europe and Asia.

99. A series of sintering experiments with different heating rates are carried out in dilatometer for the alumina green parts shaped by powder injection molding and debinding.

100. In general, the corrosion rate of the alumina refractory and the chrome refractory in the iron phosphate melts was not higher than their corrosion rate in the DWPF melt.

101. After setting, the surfaces of the specimens are ground down using carborundum and alumina.

102. The companies cut down more than 30% of energy consumption per unit of production of alumina, ethylene and caustic soda, and over 10% for crude-oil processing, electrolytic aluminum and cement.

103. The relatively high energy consumption in alumina production is all according the characteristics of bauxite resources.

104. Ultrafine alumina powders were prepared by pyrolysis of the aluminium precursor powders obtained by precipitation method using aluminium nitrate and ammonium carbonate as raw materials.

105. The microstructure of corundum-mullite duplex can be controlled by adjusting microsilica, alumina and firing temperature, which can improve hot strength of corundum-mullite duplex ceramic.

106. This paper presents a novel production process of alumina by using isooctanol.

107. Synthesis of alumina aerogel via sol-gel has motivated a worldwide interest due to their application potentials in the high-temperature catalysts and high-temperature thermal insulation etc.

108. Ceramic industry: abrasive materials, alumina, porcelain clay mud, mud and superfine glass powder, refractory material, quartz sand, PVC powder grain tree, citric acid, PE powder, washing powder, etc.

109. Because a sidestream of hot calcined alumina product is withdrawn from the main processing plant, the sidestream may be carbonized with a minimum energy cost.

110. Anodie oxide membranes with nano-nano hierarchical structures are fabricated on the surface of pure alumina by two-step anodization.

111. High alumina cement ac Pure Calcium aluminate Cement were modified by hydration - fir lug - grinding method.

112. The bath temperature, liquidus and anode effect were controlled by adjusting the AlF3 additions, aluminum tapping magnitude, cell voltage set-point and the alumina feeding interval.

113. The preparation of aluminium nitride powder by means of direct nitridation under pressurized nitrogen atmosphere and carbothermal nitridation of alumina is studied.

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114. Using white clay, calcined kaolin and industrial alumina as the major raw material, the laser cavity of alumina ceramics was prepared successfully.

115. Production technology of rebonded corundum brick made from sintered alumina and tabular alumina has been introduced.

116. Ceramic stick: Production Process for dry - pressed alumina high - performance stability, good densification.

117. Typical results from these tests show that filtration of newer ceria and alumina, and historic silica CMP slurries is beneficial in managing large particles.

118. The invention also provides a method suitable for producing boehmite particles which can be used as raw materials of the alumina particles.

119. Al melting is high energy consumption industry, energy cost is a fixed ratio in costs, Alumina, Aluminium ingot are the main energy-consumption products.

120. Methods outlined in the monograph include: use of crushed clay pots, bone charcoal, contact precipitation, or use of activated alumina (absorptive filter).

121. The results indicate that high sphericity and smooth-faced alumina based ceramic microspheres can be obtained by twice sintering process.

122. Objective:Aim of this study was to evaluate the effect of silica coating with sol-gel process on bonding strength between glass infiltrated alumina ceramic and resin luting cement.

123. This paper reports engineering experimental methods applied in brown alumina - black silicon carbide resin - bonded cutting wheel.

124. Each group has 10 models made in IPS - Empress and 10 made in In — ceram Alumina.

125. Highly ordered porous anodic alumina template was prepared by twice anodic oxidation in acidulous electrolyte, and its morphology was observed by metallographic microscopy.

126. A comparative test of standard clay bricks, high alumina bricks, silica bricks and periclase bricks which were used as checkers in upper parts of regenerators has been conducted.

127. An applied experiment of petro coke residue slurry was carried in a rotary kiln, we carry on systematic examination to the calcined alumina quality and waste gas of kiln tail etc.

128. A new type of non asbestos frictional material is developed, which is made of phenolic resin, glass fiber, alumina, silicon oxide, barium sulfate, copper powder and graphite.

129. Alumina ceramic was formed after gelling and solidify using boehmite as a binder.

130. This dissertation deals with surface modification of inorganic nano - particles ( nanometer silica, alumina and titania ).

131. Carbon membranes were successfully synthesized on the inner surface of porous alumina tubes from furfuryl alcohol (FA).

132. In this paper we have measured the particle size and specific surface area of alumina trihydrate (ATH) , and mechanical properties, O Index (O. I. ) of plasticized PVC compositions containing ATH.

133. Vertical lime kiln is the indispensable equipment for alumina sintering production process.

134. Pleasingly, the residual thiophenol could be readily removed without silyl ether hydrolysis via passage of the product through a pad of basic alumina.

135. This copper oxide layer may retard the subsequent formation of a dense and protective alumina layer.

136. Coating of sodium silicate alumina clay for aluminium alloy casting in green sand mold is studied.

137. Composite organic additions offer sufficient plasticity and dry strength to high - alumina body.

138. Porous alumina membranes with two - dimensional ordered arrangement have been prepared by the anodic oxidation.

139. In the production of alumina, the caustic ratio is the main production index in today's alumina industries.

140. The porous alumina film prepared by anodization of aluminum in chromic acid under constant voltage and direct current can absorb infared wave.

141. The effects of hydrolysis factors and drying methods on the properties of alkoxide hydrolysis and alumina are studied.

142. Brown fused alumina is one of the major abrasive products. Comparison test of chemical analysis of brown fused alumina is a must check item in laboratory proficiency testing of abrasive trade.

143. According to the heat transfer of conduction, convection and radiation in between gas, kiln wall and clinker bed, established a one dimensional thermal model for the alumina clinker kiln.

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144. Process simulation and process control are two important tools to improve performances in the alumina plants.

145. In the process of sintering alumina production, the alumina continuous carbonation decomposition process(ACCDP) is a critical procedure bridging the preceding and subsequent procedure.

146. Our company also provides Alumina sand cleaning, drying and sifting equipments which are adapted to the cleaning, drying and sifting for 20-400 eye sea sand, quartz sand and carborundum.

147. Sodium aluminate solution is purified and is seed-precipitated with addition of super-fine alumina with high activity to prepare super-fine and high-purity aluminum hydroxide and alumina.

148. The core sand mixture using alumina as refractory particle, barium hydroxide as binder, and aluminium power as additive can be hardened by CO_2.

149. Aluminium hydroxide, the precursor of alumina, was synthesized by precipitation reaction of the aluminium nitrate and sal volatile.

150. Sinte - roasting between coal and Alumina or coal and bauxite were researched in detail in this paper.

151. Usage: Mainly used in the production of fused salt electrorefining aluminium , corundum , enamel , refractories and other alumina chemical products, meanwhile it can also used in paints area.

152. Ordinary PS plate aluminum base, alumina layer and photographic adhesive layer.

153. Our main products are Silicon Carbide, Alumina Ceramic, Tungsten Carbide, and Carbon - Graphite Seal Rings.

154. I plant of the chromium oxide , alumina ceramic coating and has a tungsten carbide metal-resistant coating wear, corrosion resistance, high temperature, and other fine performance.

155. Alumina is a common carrier for catalysts. A alumina can be prepared by spray drying process.

156. A new kind of bi-supported metal catalysts was prepared by using columniform alumina and acrylon and Pd.

157. The invention provides a method for preparing a polymerization catalyst. The method comprises contacting a carrier comprising alumina with a sulfating agent and with chromium.

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158. The aluminium based composite reinforced by alumina Borate Whisker was prepared by squeeze casting method.

159. The manufacturing principle and shortcomings of common unfired high alumina bricks have been analyzed.

160. By access to information, determination methods of alumina are mainly including chrome azurol S method and aluminon method.

161. The hardness of black silicon carbide is greater than fused alumina but less than synthetic diamond.

162. Compared with the alumina pillared montmorillonite, the pillared saponite exhibited higher cracking activity and better thermal stability.

163. The Industry - Standard Activated Alumina Desiccant Is Used Extensively In Compressed Air Dryers.