Type of continuum

Gaudeng (1939) is based on the sorting properties of continuum and the difficulty of dissociation of constituent minerals. The continuum containing two minerals is divided into four different types: I, II, III, IV (Figure 2-11). -2]. Because of the morphological characteristics of the four types of mineral symbiosis forms, they are usually referred to as: adjacent type, fine vein type, shell type and wrapped type.

(1) Adjacent type is the most common of the four types of continuum. Its constituent minerals have a straight boundary, soothing, and the boundary line is linearly curved. It is generally only produced when the mineral crystal grain size far exceeds the particle size of the pulverized particles. Of course, if the constituent minerals are more self-formed and the closer they are to each other, the more favorable it is to its production. As long as this type of continuum is crushed a little, there will be mineral monomers dissociated. Due to the existence state and volume content of each constituent mineral, the sorting properties of the continuum are between them. The volume content of each constituent mineral is substantially equivalent to the surface area they each occupy.

(2) Fine vein type is also a more common type of continuous life, but less common than adjacent type. In this type of continuum, a mineral (often a useful mineral) is veined throughout a higher content of other minerals (mostly gangue minerals). Only when the particle size of the pulverized particles is significantly smaller than the pulse width of the vein mineral, the vein mineral is likely to be dissociated from the living body. The sorting properties of the continuum are similar to those of high minerals.

(3) Among the shell-type continuous granule minerals, the minerals with lower content are surrounded by shells of different thickness and surround the outer periphery of the main mineral. In most cases, the intermediate body minerals can only be partially covered by the outer shell. Although the perfect ideal enveloping is also seen, it is rarer than the former. In general, ores that make up a large difference in mineral hardness are prone to produce such continuum during crushing and grinding operations. Covering the outer periphery of such ore pyrite copper ore luminance (or bornite, galena, etc.]

When such a continuum is further pulverized, its secondary grinding product often contains fine-grained monomers of the marginal phase minerals, coarse-grained contiguous bodies, and coarse-grained monomers of the intermediate-host minerals.

In mineral engineering, it is a kind of crushed and milled product that is difficult to handle.

(4) Wrap-type minerals (mostly useful minerals) are embedded in other (carrier) minerals in the form of micro-envelopes. The inclusion body size is generally less than 5 μm, and the content is often less than 1/20 of the total. It is an important cause of tailings in metal loss. Common examples are: silicate mineral is chalcopyrite (] or tetrahedrite, sphalerite iron in the chalcopyrite, pyrrhotite pentlandite like.

Amstitz [GC Amstutz, 1972] follows the principle of similarity with Gordon, and divides the continuum into three types of nine types with higher degree of specificity (Fig. 2-11 -3).

1a is the simplest type of mineral binding relationship in the living body. The two different minerals in the particle are not only the same size, but also have a single common boundary.

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