Advanced Materials Research Vol. 826

Abstract: High Pressure Grinding Roll (HPGR) is a modern and energy-efficient surface area and pore volume of HPGR and jaw crusher comminuted products. The results indicate that HPGR products have lower work index, higher specific surface area and pore volume than its counterpart. Therefore HPGR is capable of lowering the energy consumption on plants, as well as improving the utilization of bauxite. In total, the HPGR is a better crushing solution than jaw crusher, at least in the perspective of energy efficiency.

Abstract: The crushing tests of different moisture content bauxite were made by using laboratory high pressure grinding roller. The results showed that, high pressure grinding roller capacity had little effect and favourable to crushing when bauxite contained some moisture, and high pressure grinding roller capacity reduced significantly and high pressure grinding roller crushing result effected deeply when bauxite moisture content was more than 7 %.

Abstract: Through Changing Working Pressure, the Crushing Tests of Bauxite were Made by Using Laboratory High Pressure Grinding Roller. the Results Indicated that, with Working Pressure Increased, High Pressure Grinding Roller Capacity First Increased and then Decreased. High Pressure Grinding Roller Capacity Reached Maximum when Working Pressure was 9 Mpa, and Reduced Deeply and then Gradually Slowed down when Working Pressure was more than 11 Mpa. the Particle Size of Bauxite Crushing Product P80 Gradually Reduced when Working Pressure Increased from 7 Mpa to 15 Mpa, and Gradually Increased when Working Pressure was more than 15 Mpa. the Working Pressure of 11 Mpa was Appropriate when Bauxite Crushed by Laboratory High Pressure Grinding Roller.

Abstract: An adsorbent was synthesized from modified furfural residue. The properties, kinetics and thermodynamics of alizarin red from water adsorption process on modified furfural residue were studied. The adsorption isotherm indicat that the relationship between adsorbing capacity (q_e) and equilibrium mass concentration (Ce) is in accordanced with the isothermal adsorption equations of Langmuir. sorption process of modified furfural residue for alizarin red was decalescence reactionphysical adsorption. alizarin red as an adsorptive material was an effectual method. alizarin red as an adsorptive material was an effectual method. The exploitation and utilization of this furfural residue must bring obvious economic and social benefit to us

Abstract: Lignite wax, an important chemical material, has good physical and chemical properties and is widely used in precision casting, wire and cable and other fields. This article briefly introduces the international and domestic markets of the lignite wax,and proposes the development direction of lignite wax production. Provide the basis for the production process through summary basic research data, and look for efficient solvent to improve yield and quality, and develop integrated production to realize comprehensive utilization of resources.

Abstract: White carbon black (WCB) has important applications in many fields such as rubber production and bioengineering and it has become one of the most promising functional materials currently available on the market. This paper summarizes the preparation of domestic and overseas WCB and it introduces the application progress of WCB. The main problems regarding to the development and application of WCB and its future in China are also discussed.

Abstract: The K-feldspar rocks, mechanically activated by a microcrystalline mill with an organic activator, were used to study their physical properties and kinetics of element release. The results showed that the microcrystalline grinding reduced particle size, significantly increased specific surface area, obviously improved the morphologies, and broke the lattice structure and increased abundance of amorphous and disordered constituents in K-feldspar rocks within 45 minutes of grinding. Further grinding beyond 45 minutes resulted in an undesirable effect. The microcrystalline grinding also improved release amount of K, Na, Si, Al, Fe and P, and increased the value of pH and EC in extracting solution. Among the grinding treatments, the best physicochemical properties were obtained at 45 minutes and the energy consumption was lower. In comparison to the ordinary K-feldspar rocks, the physical characteristics of the activated K-feldspar rocks were changed significantly. These changes enhanced the nutrient release from the K-feldspar rocks. Thus, microcrystalline grinding technology was important to exploit and utilize the K-feldspar rocks.

Abstract: Titanium oxide films were formed on the titanium surface by micro-arc oxidation (MAO) in Na₃PO₄ solution. Then the titanium oxide films were soaked by Fe (NO₃)₃ aqueous and calcined to improve the activity. The photocatalytic ability of titanium oxide films before and after surface treatment was evaluated by Rhodamine B aqueous solution. The results show that the photocatalytic degradation rate of titanium oxide films is low. After the surface treatment, the iron ion was doped on the titanium oxide films. It was found that the photocatalytic activity of the titanium oxide coatings was enhanced after Iron doped. The photocatalytic decoloration rate was increased from 15.1 % to 42 %.

Abstract: The ultrafine powder composite admixture of fly ash and silica fume were researched in this article according to ultrafine powder fly ash and silica fume features.Through the different proportions of admixture strength test to determine the best ratio.The experimental results showed that appropriate admixture with 21.5%,12% of fly ash,8% of silica fume,1.5% of compound activator 28 days of flexural strength could be achieved 10.8Mpa,compressive strength could reach 54Mpa.

Abstract: Developed a kind of ball milling device under ultrasonic energy field, which prepared out WS₂ particles with average particle size 59 nm, among which 85 percent particles are less than 100 nm. Get a group of suitable technical parameters, through contrastive experiments to milling time, milling balls size, mixing round speed, material plasma thickness, balls and material ratio and suchlike factors effect on powder preparation. The experiments result shows: effect of the experiment of balls milling with ultrasonic field is greatly better than that of the experiment balls milling without supersonic field; Furthers, inclined arrangement of ultrasonic breadth modulation bars gets better particles than vertical arrangement ultrasonic. This preparation method can get well and stable refining output with several times higher efficiency than other processing methods and then can meet the demands of nanograde WS₂ lot preparation in low cost.