添加剂在固相法制备三氧化二铬中作用的研究

研究了在固相法制备三氧化二铬中多种添加剂对三氧化二铬性能，特别是六价铬残留量和表面性质的影响。     

掺杂对共沉淀法制备的锰锌铁氧体性能的影响

通过加入添加剂,制备了晶相单一、结晶度完好、具有较好磁性能的锰锌铁氧体纳米晶,然后研究添加剂对铁氧体晶相、磁性能和居里温度的影响.研究结果表明:添加剂可以使晶体生长更完善,晶粒变大;同时可以改善样品的磁性能,降低居里温度.     

我国塑料助剂生产现状与发展趋势

简述了我国塑料助剂生产现状、市场供需及发展方向，“十五”期间我国塑料助剂工业发展势头强劲，目前已基本满足我国塑料工业的发展需求，但是在品种和产品质量等方面与国外先进水平相比仍有较大的差距。提出了提高我国塑料助剂国际市场竞争力的措施。     

Effects of diacrylate monomers on the mechanical properties of polymer concrete made with wet aggregates

Because normal polymer concrete does not work well with wet aggregates, diacrylate (DA) monomers were evaluated for improving the mechanical properties of polymer concrete made with wet aggregates. Zinc diacrylate (ZDA) and calcium diacrylate (CDA) were each used as an additive to resins (two epoxies). The variables were the amount of diacrylate monomers and the aggregate conditions (wet or dry). Compressive strength, flexural strength, workability, working time, and curing time were measured. ZDA was found to improve the workability and the working time, and CDA was found to improve the compressive and the flexural strength. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1077–1085, 2004     

黄原胶的结构、性能与应用

简要介绍了黄原胶的结构、性能;综述了它在化学工业及食品工业中的应用;重点论述了黄原胶作为悬浮剂、乳化剂、稳定剂、增稠剂等在日用化学工业中的应用,具有优良的悬浮性、乳化性、流变性、热稳定性及酸、碱稳定性;最后指出了我国在黄原胶应用方面的不足及以后的发展方向。     

Bauxite residue (red mud) increases phosphorus retention in sandy soil catchments in Western Australia

The Peel-Harvey estuary on the Swan Coastal Plain, Western Australia has become eutrophic partly because of the leaching of fertiliser phosphorus from sandy soils. The acid, coarse textured sandy soils are predominantly quartz, have a low iron and aluminium content and do not retain phosphorus. Red mud, derived from bauxite, is a by-product of the alumina industry and has the ability to retain phosphorus. Retention of phosphorus is enhanced when the red mud is neutralised with gypsum. Red mud has been suggested as a soil amendment to reduce phosphorus leaching.To investigate the reduction in the leaching of phosphorus from soils amended with red mud, weirs were constructed at the outlets from a pair of catchments to quantify the amount of phosphorus in the streamflow. Both catchments were deep grey Bassendean sand. One of the catchments was treated with 80 t/ha of red mud which had been neutralised with waste gypsum from the phosphate industry. The red mud was applied to the soil surface using conventional fertiliser spreading equipment. The other catchment was untreated.The red mud reduced phosphorus loss by 70% from 13.8 kg/ha on the untreated catchment, to 4.2 kg/ha on the treated catchment. Both catchments were treated with 20.4 kg/ha of phosphorus as superphosphate. The catchment treated with red mud also received a further 41.5 kg/ha of phosphorus from the phosphogypsum that was used to neutralise the red mud.Our results show that red mud reduces phosphorus leaching and is potentially a nutrient management option in sandy soils. Red mud has the potential to reduce the impact of agriculture on the estuarine environment and has implications for the continued expansion and intensification of agriculture in the Peel-Harvey catchment.     

水煤浆添加剂及其研究进展

介绍了水煤浆添加剂结构特征对煤成浆性能影响的研究情况及新型高效添加剂的研究进展。目前制浆添加剂主要分为阴离子表面活性剂和非离子表面活性剂;我国与国外的水煤浆添加剂技术相比,还存在一定的差距,特别是分散降粘性质方面,高效、价廉、适用性广的添加剂为数并不多。     

微波烧结Al2O3-TiC复合材料的研究

以纳米级TiC、Al2 O3 为原料 ,用微波烧结制备Al2 O3 -TiC复合材料 ,并与常规烧结比较。分析了两种烧结方法对制备试样的力学性能的影响 ,并探讨了添加剂对Al2 O3 -TiC复合材料烧结性能的影响     

氧化铝生产赤泥附液吸收H_2S实验研究

对氧化铝生产附产赤泥吸收净化H2 S废气进行了实验研究 ,赤泥附液吸收H2 S具有吸收效率高、吸收容量大、易控制 ,操作简便等优点 ,在较少时间内对H2 S的吸收效率保持在 90 %以上。     

球磨效率探讨

主要讨论了球石的装载量、球石空隙率、球石级配、泥浆密度等因素对球磨效率的影响。运用正交试验优选了各因素。