Crushing Plant Design and Layout Considerations Ken Boyd, Manager, Material Handling, AMEC Mining amp; Metals , Vancouver, BC ABSTRACT In mining operations, the layout of crushing plants and ancillary equipment and structures is a crucial factor in meeting production requirements while keeping capital and operational costs to a minimum.
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Crushing Plant Design amp; Layout. In mining operations, the layout of crushing plants and ancillary equipment and structures is a crucial factor in meeting production requirements while keeping capital and operational costs to a minimum.
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The number of crushing stages depends on the maximum grain size of the crude ore, the required particle size of the final crushing product, and the crushing ratio that can be achieved in each broken section, that is, the total crushing ratio required and the crushing ratio of each section. The maximum grain size in the ore is related to the occurrence conditions of the ore, the scale of the mine, the mining method, and the transportation and handling methods of the ore. Open pit mining depends mainly on the size of the mine and the volume of the loading shovel, typically 500 to 1300 mm. When mining underground, it depends mainly on the size of the mine and the mining method, generally 300 600 mm. The size of the broken final product varies depending on the purpose of the crush. For example, the feeding of the autogenous mill is 300 to 500 mm, the particle size of the iron rich ore smelting in the blast furnace is divided into two stages of 25 30 and 25 30 mm. The reasonable or...
Pre screening is to pre screen the qualified grain size before the ore enters the crushing section, which can reduce the number of minerals entering the crusher and increase the production capacity of the crusher; at the same time, it can prevent the ore from being crushed. When processing with ore with higher water content and more fine ore, the wet mineral powder will block the crushing chamber of the crusher and significantly reduce the production capacity of the crusher. The use of pre screening to remove wet and fine mineral powder can cause more normal working conditions for the crusher. Therefore, the application of the pre screening is mainly determined based on the content of the fine grained grade in the ore . The higher the fine fraction content, the more advantageous it is to use pre screening. Studies have shown that technically and economically, pre screening favorable ore, in which the limit con...
The sand aggregate production line can be simply summarized as crushing, screening, and storage. In order to obtain aggregate products with all indicators in line with the standard, the selection of host equipment will become the primary consideration in the design of the production line.
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1. Selection of the effective volume of the front hopper of the crusher
In general, the effective volume of the hopper design should meet the following two conditions at the same time 1. No less than the workload of continuous operation of the crusher for 12 15 minutes. 2. The carrying capacity of no less than 3 transport vehicles.
2. The layout of the crushing workshop
The layout of the crushing workshop should not only take into account the smooth flow of materials in and out of the crushing process, but also make full use of the terrain and altitude differences, and try to arrange the crushing plant on the same horizontal plane. In this way, not only the investment in civil construction can be reduced, but also the maintenance, inspection, and replacement of parts of the crusher are convenient.
3. The layout of the screening workshop
1. The layout of the vibrating screen should be designed with an inspection platform around the equipment. 2. The workshop should be closed, and the vibrating screen equipment itself should be sealed to avoid a large amount of dust overflow during screening. 3. Convenient for dust collection treatment of dusty gas.
1. Sources of environmental pollution
The environmental pollutioncaused by sand and gravel production lines is mainly dust, noise, and sewage generated during the production process. Dust mainly comes from the discharge points of crushing and screening equipment, transportation, and transfer points, finished aggregate storage and unloading points, and dust during outbound aggregate loading. The noise mainly comes from the operation of crushers, vibrating screens, and other equipment. The sewage is mainly domestic sewage and does...
2. Environmental protection measures
1. Dust control measures 1. Dust is generated in the whole process of aggregate production. In order to effectively control the amount of dust emission, the design is designed to minimize dust in the process, choose equipment with less dust, and use conveying and feeding equipment with good sealing performance. Pay attention to the shape and angle of the material pipe when designing the material pipe connected to the equipment to minimize the drop. 2. All dust discharge points adopt high effi...
There are three main steps in designing a good crushing plant: process design, equipment selection, and layout. The first two are dictated by production requirements and design parameters, but the layout can reflect the input, preferences and operational experience of a number of parties. These can include the owners engineering staff ...