An ore crushing plant reduces run-of-mine material into controlled sizes for mineral processing, transport, or sale. A typical process uses primary crushing, optional secondary or tertiary crushing, screening, and conveyors, with the final arrangement determined by the ore, feed size, required product, and target throughput. To plan a suitable plant, buyers should define these inputs first, then compare equipment against the complete process—not just an individual crusher’s rated capacity. This guide explains the main decisions and the information to prepare before requesting a proposal from DAHONGLI.
This guide is intended for mine owners, project developers, engineering teams, and procurement managers evaluating a new ore crushing line or an upgrade to an existing operation. It is also useful when comparing equipment suppliers or preparing a preliminary project specification. The recommendations are general planning guidance, not a substitute for ore testing, detailed engineering, or a site-specific design. Final equipment selection should be checked against actual material characteristics and operating conditions.
Material is usually delivered from the mine by truck or feeder to a receiving hopper. A vibrating feeder can regulate the flow and, where appropriate, remove some fines before material enters the primary crusher. The crushed material then moves by conveyor to a screen or the next crushing stage. Screening separates particles by size, returning oversize material for further crushing when the circuit is designed as a closed loop.
The number of stages depends on the gap between the mine feed size and the required product size. A plant producing coarse material may need fewer stages than one making a closely controlled, finer product for downstream processing. The circuit may also include stockpiles, transfer points, dust-control measures, and metal detection, depending on site conditions and project requirements. Those supporting systems should be included in the layout and capacity review.
| Equipment | Typical role | Key selection consideration |
|---|---|---|
| Hopper and feeder | Receives and meters material into the circuit | Feed size, surge volume, and flow consistency |
| Jaw crusher | Commonly used for primary size reduction | Maximum feed size, ore properties, and required discharge size |
| Cone or impact crusher | May provide secondary or further reduction | Material abrasiveness, product shape, and circuit configuration |
| Vibrating screen | Separates material into size fractions | Cut size, feed distribution, and screening conditions |
| Conveyors | Transfer material between process stages | Route, loading points, inclination, and required flow |
These are common equipment roles rather than a fixed plant specification. For example, crusher type and wear-part selection depend on ore hardness, abrasiveness, moisture, and the desired product. Wet or sticky feed may affect screening and material handling, while highly abrasive ore can influence wear-part consumption and maintenance planning. Ask suppliers to explain how each proposed machine fits the full circuit and the material data provided.
Start with representative information about the ore, including its size distribution, hardness or strength, abrasiveness, moisture, and any tendency to become sticky or break along natural planes. Confirm whether the feed contains clay, fines, or occasional oversize rocks, as these can affect feeding and screening. If the material varies by mining zone or season, provide that range rather than a single ideal value. Where data are uncertain, arrange suitable sampling or testing before final equipment commitments.
Next, define the product requirement in measurable terms. Specify the target size range, the proportion of fines that can be accepted, and whether the output feeds a mill, a leaching circuit, a stockpile, or a customer specification. A requirement such as “small product” is not enough to size crushers and screens. The plant designer needs a defined product distribution and a clear description of how product quality will be assessed.
Annual production targets should be converted into an hourly operating rate before equipment is selected. For example, a project targeting 1.2 million tonnes per year over 300 operating days and 20 operating hours per day needs an average rate of 200 tonnes per operating hour, before allowing for yield losses or process constraints. This is an illustrative calculation, not a recommended capacity for every mine. Use the project’s planned operating calendar, material balance, and product requirements to establish the actual design basis.
Also distinguish between average production and instantaneous equipment capacity. Planned maintenance, unplanned stops, feed interruptions, and downstream limits can reduce the tonnes produced over a shift or year. In a separate simplified example, delivering 160 tonnes per hour of saleable product during 80% effective operating time would require 200 tonnes per operating hour while running, assuming no losses and one consistent product stream. Real circuits need a more complete calculation that accounts for availability, recirculating load, product yield, and bottlenecks.
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A crusher with a suitable nominal capacity can still be the wrong choice if the feeder cannot deliver material consistently or the screen cannot handle the required separation. Similarly, a conveyor transfer point may restrict flow even when the main machines have higher ratings. Request the proposed process flow diagram and a clear statement of the assumptions used for sizing. This makes it easier to compare supplier offers on an equivalent basis.
The total project budget can include more than the crushers themselves. Depending on the scope, buyers may need to account for feeders, screens, conveyors, steel structures, electrical and control systems, installation, commissioning, civil works, freight, and spare parts. Supplier quotations may cover different combinations of these items, so compare the scope line by line. Request clarification on exclusions before making a commercial comparison.
Minimum order quantities and lead times are project-specific for plant equipment. They may depend on the selected configuration, component availability, fabrication schedule, inspection requirements, and delivery destination. Rather than relying on a generic lead-time estimate, ask the supplier to provide a current schedule tied to the proposed scope, along with milestones for drawing approval, manufacturing, inspection, and shipment. Confirm which dates depend on buyer approvals or site readiness.
At DAHONGLI, we recommend sharing project inputs before choosing a machine configuration. Our team can review the required process stages, equipment interfaces, and information still needed for a meaningful proposal. This helps buyers identify design questions early and compare options against their operating goals. Final recommendations depend on the project data and confirmed scope.
One frequent mistake is sizing a plant from its desired annual output without checking available operating hours and realistic process constraints. Another is specifying only a final product size while leaving feed variability and fines content undefined. Buyers can also underestimate the importance of screening, transfer points, and access for maintenance. These omissions may create a mismatch between machine ratings and actual plant performance.
A further risk is comparing quotations that use different assumptions. One offer may include screens and conveyors while another covers crushers only, or each may define capacity under different feed conditions. Ask every supplier to use the same design basis and list exceptions explicitly. Where ore properties remain uncertain, treat early selections as preliminary until representative data are available.
An effective ore crushing plant is designed around the material, required product, and operating target. The usual flow combines controlled feeding, one or more crushing stages, screening, and material transfer, but the exact configuration must be established for each project. Capacity planning should translate annual demand into operating rate and then test the whole circuit for constraints. Equipment should be compared as part of an integrated system, with assumptions and scope made explicit.
To move toward a procurement decision, prepare the ore description, feed-size information, target product specification, production schedule, site location, and preferred project scope. Share these details with DAHONGLI to discuss process-flow options and identify information needed for equipment selection. A clear design basis is the most practical first step toward a comparable quotation and a plant configuration suited to your operation.
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