Grinding vs Enrichment and Upgrading

In mineral processing plant, In the size reduction stages of grinding we are also creating the conditions for the following process stages of enrichment and upgrading.
From the picture below we can see the effect of “under- and over grinding”
The lost performance in separation, sedimentation and dewatering due to “misgrinding” represents a major problem for many operations, eroding the process economy.
sinonine can also provide sand washing plant epc.
 Sinoninetechnology team

评论

发表评论

此博客中的热门博文

Mineral froth flotation

图片
Sinonine deeply know that in a beaker of water, if air is introduced from the bottom, air bubbles are produced  and rise to the surface of the water as the density of an air bubble is much less than that of water (Figure.1 A). Similarly air bubbles also rise if air is introduced in a pulp containing mineral particles. If a mineral particle of high density adheres to the air bubble, the air bubble along with the mineral particle rises to the surface because the apparent density of the air bubble and the adhered mineral particle is less than that of water. If many mineral particles are adhered to the air bubble, still the air bubble rises to the surface as the apparent density of the air bubble and adhered mineral particles is less than that of water due to the relatively large volume of the air bubble Figure 1 B). This concept is the basis for froth flotation operation. To use this concept or phenomenon, the following are required: 1 Method to make the mineral particles adhere to
阅读全文

The motion of the charge in a ball mill

图片
The distinctive feature of ball mills is the use of loose crushing bodies, which are large, hard, and heavy in relation to the ore particles, but small in relation to the volume of the mill, and which occupy slightly less than half the volume of the mill. Due to the rotation and friction of the mill shell,the grinding medium is lifted along the rising side of the mill until a position of dynamic equilibrium is reached, when the bodies cascade and cataract down the free surface of the other bodies, about a dead zone where little movement occurs, down to the toe of the mill charge (Figure 1). Figure1. Motion of charge in a ball mill The speed at which a mill is run is important, since it governs the nature of the product and the amount of wear on the shell liners. For instance, a practical knowledge of the trajectories followed by the steel balls in a mill determines the speed at which it must be run in order that the descending balls shall fall on to the toe of the charge, an
阅读全文

The Slurry Line

图片
Slurry pumps are important being the energy source in all hydraulic systems for slurry handling. However, the slurry pumps are mainly just energy converters in the systems (converting electric energy to hydraulic flows). Equally important is to design “the slurry line” with the correct sizing of hoses (or pipes) including • Hose lay-out geometry (vertical and horizontal) needed for the transportation job • Hose material giving resistance to the wear and to the chemical environment • Hose diameter enabling maximum efficiency of the slurry system SLURRY OPERATIONS Grinding Classification Separation Sedimentation Mechanical dewatering Hoses are for slurry handling what conveyor belts are for dry materials handling. Simple products – which just have to maintain their functions. Otherwise the process flow will be interrupted and the up-time is gone. There is just one rule for lay-outs of slurry hoses and pipes, but a golden one. “ Never use sharp bends when co
阅读全文