共查询到20条相似文献,搜索用时 78 毫秒
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《化工矿物与加工》2002,31(11):39-39
山东陵县通过引进招商项目 ,将境内山东绿源集团的废磷石膏加工成具有防潮、防火的室内装修材料纸面石膏板。目前 ,该县石膏板生产企业已达 10家 ,年生产纸面石膏板 110 0万m2 ,利税可达 32 5万元。绿源集团的磷石膏也因此成了众企业争购的原料 ,年可增收 5 0万元。作为一种新型的绿色建材 ,纸面石膏板以其质轻、防火、隔热、隔音、吸潮、节能、抗震、施工方便快捷、装饰效果好等独到优势 ,正广泛应用于内隔墙、护墙和天花板吊顶等装饰、装修 ,市场需求量很大。而以废磷石膏为原料加工的纸面石膏板 ,每吨产品的原料成本可以降低 6 0元 ,每… 相似文献
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目前我国大部分磷肥生产企业磷石膏固体废渣只能堆存,占用了大量土地,当堆场防渗处理不好时,投入大量的资金对堆存的磷石膏进行防渗治理,给企业发展带来了很大的经济负担。贵州磷化将磷石膏改性后进行井下充填采矿,可利用磷石膏2 000~3 000 kt/a;通过在建材方面的开发与利用,全面投产后形成1 200 kt/a建筑石膏粉、1 800 kt/a高温石膏粉、300 kt/a高强石膏粉配套上下游产品、2 100 kt/a石膏砂浆、石膏条板1×10~7 m~2/a、3×10~7 m~2/a无纸面石膏板、1.2×10~6 m~2/a石膏配筋大板的生产能力,可消耗磷石膏3 000~5 000 kt/a;与科研单位合作进行磷石膏制硫酸联产活性氧化钙中试项目,对实现贵州"以渣定产"的目标和磷石膏资源化、绿色化、产业化综合利用具有十分重要的意义。 相似文献
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磷石膏作为主要的工业副产石膏,通过煅烧制备得到建材石膏粉体。归纳了国内外现有磷石膏煅烧工艺特点及利弊,针对现有的炒锅、回转窑、沸腾炉、彼得磨、FC-沸腾炉、锤式粉碎等煅烧工艺存在的产品质量不稳定、可控性差、功能单一、能耗高、投资高等技术及装备问题,提出流化床煅烧工艺。重点介绍了流化床煅烧磷石膏工艺技术具有大型化、流态化、产品多元化、干法净化、绿色环保的特点及技术创新优势。并与目前主流煅烧工艺产品性能指标分析进行对比,得出流化床煅烧磷石膏工艺产品质量稳定性好、可控性强、性能指标优越,必然成为未来磷石膏制备建材石膏粉体的主流技术手段,为中国磷石膏的煅烧资源化利用提供指导价值。 相似文献
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水解石膏粉和水解石膏空心隔墙板(简称空心石膏板)是利用木材水解生产酒精过程中排出的石膏废渣研制成功的新型建筑材料。水解石膏粉可用于建筑施工的抹灰灰泥、石膏胶泥、石膏腻子和制造石膏板等,该项制品经物理、化学性能测试,其各项技术指标均达到了国家建筑石膏质量标准。空心石膏板可用于工业和民用建筑的内隔墙板,该项制品经物理力学性能试验,均达到了国内其他种类化学石膏制品的质量标准。 相似文献
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阐述我国磷石膏的产排量与特点,以及磷石膏在石膏条板、纸面石膏板、水泥缓凝剂、石膏砌块、石膏砖、装饰材料、储能材料等方面的应用;介绍了石膏模盒技术及工业副产石膏在石膏模盒生产中的应用情况;对提高磷石膏综合利用率提出了应用建议。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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D. G. Gordeev L. F. Gudarenko M. V. Zhernokletov V. G. Kudel’kin M. A. Mochalov 《Combustion, Explosion, and Shock Waves》2008,44(2):177-189
A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation
of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from
the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO2) of density 0.08 g/cm3.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
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Jorge Marcelo Romero Soledad Bustillo Hugo Enrique Ramirez Maisuls Nelly Lidia Jorge Manuel Eduardo Gómez Vara Eduardo Alberto Castro Alicia H. Jubert 《International journal of molecular sciences》2007,8(7):688-694
A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out. 相似文献
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A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%. 相似文献
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醋酸纤维素取代基分布与性质的关系 总被引:9,自引:0,他引:9
分析了以吡啶为溶剂的醋酸纤维素的13C-NMR核磁共振谱,得出了三种不同位置羟基的取代度。结合X—射线和DSC分析,初步说明具有相同取代度但未经水解和经过水解的醋酸纤维素(CA) 性质上的差异是由于三个羟基上的取代度分布不同及消晶程度差异所致。 相似文献