Clirik grinding mill for Nepheline powder http://www.mill-grinding.com
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SHangahi Clirik machinery Co.,LTD (China)
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Nepheline, also called nephelite, is a feldspathoid: a silica- undersaturated aluminosilicate that occurs in intrusive and volcanic rocks with low silica, and in their associated pegmatites. It is often found in micaschist and gneiss.
Grayish-white nepheline crystals with dark schorlomite
Nepheline mainly used for glass and ceramics industry, or as raw material of the refined aluminum. Crushed Nepheline powder is important raw materials of glass and ceramics industry, or as raw material of the refined aluminum. Before processing Nepheline powder for glass and ceramics industry, you need firstly Nepheline stone to be 265mesh~ 2500mesh. Clirik offersHGM series ultrafine mill andhigh pressure grinding mill to grind Nepheline stone. And you can choose open circuit or closed circuit powder grinding system according to your real situation.
Brief introduction about Nepheline:
Nepheline crystals are rare and belong to the hexagonal system, usually having the form of a short, six-sided prism terminated by the basal plane. It is found in compact, granular aggregates, and can be white, yellow, gray, green, or even reddish. The hardness is 5.5 - 6, and the specific gravity 2.56 - 2.66. It is often translucent with a greasy luster.
The low index of refraction and the feeble double refraction in nepheline are nearly the same as in quartz; but since in nepheline the sign of the double refraction is negative, while in quartz it is positive, the two minerals are readily distinguished under the microscope. An important determinative character of nepheline is the ease with which it is decomposed by hydrochloric acid, with separation of gelatinous silica (which may be readily stained by coloring matters) and cubes of salt. For this reason, a clear crystal of nepheline becomes cloudy when immersed in acid.
The mineral is one especially liable to alteration, and in the laboratory various substitution products of nepheline have been prepared. In nature it is frequently altered to zeolites (especially natrolite), sodalite, kaolin, or compact muscovite. Gieseckite and liebenerite are pseudomorphs.
Two varieties of nepheline are distinguished, differing in their external appearance and in their mode of occurrence, being analogous in these respects to sanidine and common orthoclase respectively. Glassy nepheline has the form of small, colorless, transparent crystals and grains with a vitreous luster. It is characteristic of the later volcanic rocks rich in alkalis, such as phonolite, nepheline-basalt, leucite basalt, etc., and also of certain dike-rocks, such as tinguaite. The best crystals occur with mica, sanidine, garnet, etc., in the crystal-lined cavities of the ejected blocks of Monte Somma, Vesuvius. The other variety, known as elaeolite, occurs as large, rough crystals, or more often as irregular masses, which have a greasy luster and are opaque, or at most translucent, with a reddish, greenish, brownish or grey color. It forms an essential constituent of certain alkaline plutonic rocks of the nepheline syenite series, which are typically developed in southern Norway.
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Shanghai Clirik Machinery Co., Ltd
Address: No.19Fuqing Rd,Shanghai 201201,China
http://saico.net http://www.clirik.com http://www.micro-mill.org
Shanghai Clirik Machinery Co., Ltd, located in Pudong New Area of Shanghai, China, is a large professional manufacturer with import & export rights specializing in research, manufacture and sales of crushing machinery, mining equipment, and grinding machines, such as micro powder grinding mills, ultrafine mills, stone grinder mills, hammer crushers, jaw crushers and associated accessories. The grinding mills and crushers are widely applied in metallurgy, hydraulic engineering, mining, chemical, construction, coal, refractory, ceramic and other industries.
As one of the pioneer manufacturers who have engaged in crushers and micro powder grinding mills for over 20 years, Shanghai Clirik Machinery Co. Ltd. has strong capability in R&D, design and manufacturing. However, to better meet the challenges of modernization and the needs of international market competition, Clirik still insists on the communication and cooperation with prestigious scientific research institutions from both home and abroad to strengthen its ability in machinery design, production, maintenance, testing and reform.
With several years’ efforts, Clirik now grows to be a first-class manufacturer of mining machines with a complete advanced production line established, covering the main products below:
1. Stone crushing equipment series: crusher machine, jaw crusher, hammer crusher, stone crusher, hammer mill，ore crusher, and crushing plant.
2. HGM micro powder grinding machinery: ultrafine mill, powder grinding mills, rock grinding mills, stone grinding machine, milling machinery, , quarry plant, and grinder mill.
3. Auxiliary products: vibrating screen, classifier, bucket elevator, belt conveyor, vibrating feeder, and other associated equipment