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超细粉碎包括微粉碎和超微粉碎,通常指用机械或气流式粉碎设备生产的10或1微米以下超细粉体的粉碎工艺技术。超细粉碎是矿物原料最重要的深加工技术之一,其产品广泛用于新型陶瓷、耐火材料、涂料、油漆、橡胶、造纸、微电子材料以及国防尖端技术等领域。发展超细粉碎工艺技术,除促进材料科学的发展 相似文献
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块状硅土矿是一种由隐晶质石英组成的松软硅质岩,通过气流粉碎与表面改性制备出的活性超细石英粉是一种优质的橡塑填料。 相似文献
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块状硅土矿是一种由隐晶质石英组成的松软基质岩,通过气流粉碎与表面改性剂制备出的活性超细石英粉是一种优质的橡胶塑料。 相似文献
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综述了超细粉体技术在无机矿物作为橡胶补强填充剂中的应用。介绍了近年来超细粉碎技术、超细粉体的表面改性技术运用于无机矿物填料的研究现状。经超细粉碎、改性后的无机矿物可全部或部分代替炭黑等常规橡胶填料,从而降低橡胶生产成本。 相似文献
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我国超细粉碎与超细分级技术的现状及问题 总被引:5,自引:0,他引:5
孙成林 《硫磷设计与粉体工程》2002,(6):4-10
近年来 ,我国的超细粉碎与超细分级技术有很大的发展 ,但在发展过程中存在着一些问题。超细粉体涉及的行业众多 ,但对其粒度的分类至今国内尚无定论。通过调研 ,分析了目前国内超细粉碎设备的现状。对超细粉体分级技术中的干法分级和湿法分级作了比较全面的介绍 ,并对我国超细粉碎与超细分级技术的发展提出了建议 相似文献
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超细粉碎技术及其在锆英石加工上的应用 总被引:4,自引:2,他引:2
超细粉碎技术是70年代以后为适应现代高新技术的发展需要而派生的一种物料加工新技术。一般粉碎技术只能使物料粒径达到45μm左右,超细粉碎技术则可以使物料粒径达到10μm,甚至1μm以下。从45μm到10μm以下虽然只有几十微米的差距,但由于物料粒径小到10μm以下以后,其表面积、光、电、磁、热力学性质及表面特性均发生了奇特变化,使用时可获得超常效果,从而使物料的商品价值也以超常的比例递增。 现代超细粉碎的粒度界限如何划分,目前尚无——致的说法,一般将10μm以下的粉体物料称为“超细”粉体,生产这些“超细”粉体的粉碎工艺技术习惯上称之为超细粉碎。迄今为止的超细粉碎方法主要是机械粉碎,包括高速机械冲击式磨 相似文献
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瓷石超细粉碎试验研究 总被引:1,自引:0,他引:1
本文选用高速冲击粉碎机对瓷石的超细粉碎进行了试验研究。研究表明瓷石的超细粉碎效果明显,污染少,单位能耗低。推荐的超细粉碎工艺流程实用性强。 相似文献
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本文利用震动磨对羟基磷灰石进行超细粉碎,优选出震动磨超细粉碎的最佳工艺条件。利用震动磨研磨可以得到粒度分布单一的粉体样品,D50为2.001μm。 相似文献
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非金属矿超细粉碎中的几个问题 总被引:5,自引:1,他引:4
超细粉碎与分级技术是非金属矿深加工的重要手段之一,作者对国内涉及到的超细粉碎设备,工艺,产品粒度等方面的问题提出了自己的见解,以求起国内同行的重视。以利超细粉碎技术的发展。 相似文献
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Ryszard Petela 《Fuel》1984,63(3):414-418
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J.M. Menndez Aguado A.L. Coello Velzquez O.N. Tijonov M.A. Rodríguez Díaz 《Powder Technology》2006,170(3):153-157
This paper presents an analysis of the potential benefits of implementing energy sustainability concepts during comminution processes. The work is based on the classical comminution theory and on the theoretical postulates of the multi-component grinding. The assessment of the Punta Gorda grinding plant is presented as a case study. It applies factorial method from the Energy Management System perspective. 相似文献
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Alberto Carpinteri 《Powder Technology》2003,131(1):93-98
The drilling comminution is theoretically and experimentally analyzed by a multifractal approach. A generalization of the three classical comminution laws [Rittinger, P.R., 1867. Lehrbuch der Aufbereitungskunde. Berlin; Kick, F., 1885. Das Gesetz der Proportionalen Widerstände. Leipzig; Bond, F.C., Min. Eng. 193 (1952) 484] has been performed to evaluate the energy dissipation in the process and to compute the mass distribution of the particles. A transitional fractal exponent of the fragment size distribution is experimentally demonstrated to exist. As a consequence, a multifractal scaling law for the partial mass of fragments and its physical interpretation is consistently proposed.In addition, we show, both theoretically and experimentally, that the drilling strength is strongly size-dependent and cannot be considered a material constant, as classically supposed. Consequently, a multifractal scaling law for the drilling strength is also proposed. 相似文献
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An investigation into the influence of microwave treatment on mineral ore comminution 总被引:1,自引:0,他引:1
The influence of microwave pre-treatment on mineral ore breakage has been investigated. Samples of lead-zinc ore were microwave pre-treated prior to strength testing and change in strength with microwave exposure time determined. Comparisons of change in strength were made between microwave-treated and -untreated material. Using a multimode microwave cavity, it was found that strength could be significantly reduced in 0.5 s when using 15 kW of microwave power. Lower powers in this type of cavity were found to be less effective. Drop weight tests were used to quantify the change in strength in terms of reduction in required comminution energy. Reductions of up to 40% were achieved for particles of mean size 14.53 mm. Preliminary tests in a single-mode microwave cavity gave strength reductions of 50% at 10 kW of microwave power with a residence time of only 0.1 s, indicating that high electric field strength is important in the failure of ore. A preliminary energy balance indicating the benefits of single-mode heating is presented. 相似文献