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Nepheline grinding mill

Nepheline, also called nephelite, is a feldspathoid: a silica- undersaturated aluminosilicate that occurs in intrusiveand volcanicrocks with low silica, and in their associated pegmatites. It is often found in micaschistand gneiss. Grayish-

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Nepheline, also called nephelite, is a feldspathoid: a silica- undersaturated aluminosilicate that occurs in intrusiveand volcanicrocks with low silica, and in their associated pegmatites. It is often found in micaschistand gneiss.

Brief introduction about Nepheline:

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 powderfor glass and ceramics industry, you need firstly Nephelinestone to be 265mesh~ 2500mesh. Clirik offers HGM series ultrafine mill and high pressure grinding mill to grind Nepheline stone. And you can choose open circuit or closed circuit powder grinding system according to your real situation.

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 sanidineand common orthoclaserespectively. 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 plutonicrocks of the nepheline syeniteseries, which are typically developed in southern Norway.

Performance and features:

1.    High efficiency

Under the same final size and power, the product capacity of ultrafine mill is twice than jet mill and agitation mill.

2.    Longer lifetime of spare parts

The roller and ring are made of special material, which improve the grinding efficiency a lot. For same material and final size, the lifetime of its wearing parts can reach to more than one year, about 2-5 times as long as that of vertical shaft impact crusher and turbo-mill. Especially when handling calcium carbonate and calcite, the lifetime can reach 2-5 years.

3.    High safety and reliability:

There are no rolling bearings and bolts in grinding cavity, so problems caused by bolts shedding or wear of bearings and seal components will never happen.

4.    High fineness of products

The product fineness can reach D97≤5μm.

5.    Environment friendly

The application of pulse dust collector and muffler reduce the pollution and noise of the dust, which has reached national environment protection standard.

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 powderfor glass and ceramics industry, you need firstly Nephelinestone to be 265mesh~ 2500mesh. Clirik offers HGM series ultrafine mill and high pressure grinding mill to grind Nepheline stone. And you can choose open circuit or closed circuit powder grinding system according to your real situation.

Model HGM80 HGM90 HGM100 HGM125 HGM1680
Ring Diameter(mm) 800 900 1000 1250 1680
Ring Number (PCS) 3 3-4 4 4 4
Roller Number(PCS) 18-21 24-29 28-36 30-44 30-40
Main Shaft Speed (r. p. min) 230-240 200-220 180-200 135-155 120-130
Input Size (mm) ≤10 ≤10 ≤15 ≤15 ≤20
Finished Size (um/mesh) 74-5
(200-2500)
74-5
(200-2500)
74-5
(200-2500)
100-6
(150-2000)
100-9
(150-1500)
Capacity (t/h) 0.4-4.5 0.6-6.5 1-9 2-16 3.8-30
Outlet Size L*W*H (m) 13.9*4*6.2 14.7*4.8*7.2 18*4.6*8.6 14*9*10.25 26.3*7.5*11.9

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