In coal mining, washing, transportation, and end-use applications (such as coal for power plants and industrial boilers), screening and crushing are key pretreatment processes. Motek screening and crushing buckets, with their "integrated operation" and "flexible adaptability," significantly improve the overall efficiency of the entire coal processing process compared to traditional separate equipment (separate screening machine + crusher).
The specific benefits can be summarized in the following five dimensions:
1.Significantly Improved Operational Efficiency and Reduced Losses During Process Connections.
Traditional coal processing requires a loader to transport raw coal to a screening machine, then screening it, and finally transporting the large pieces of coal to a crusher. The entire process involves multiple stages: "transfer - screening - re-transfer - crushing," which is not only time-consuming but also prone to losses due to material transfer. Motek screening and crushing bucket can be directly installed on common engineering equipment such as loaders and excavators, achieving "screening + crushing in one operation": During operation, the bucket directly scoops up raw coal, and the built-in screening grid first separates the finished coal that meets the particle size requirements (such as 0-50mm domestic coal and 0-20mm power plant coal), while large pieces of coal (such as those larger than 50mm) are crushed inside the bucket. After crushing, the coal is screened again, and finally, coal of qualified particle size is directly produced. The entire process does not require material transfer, and a single unit can complete multiple processes, improving the operating efficiency by 40%-60% compared to the traditional mode. It is especially suitable for scenarios such as coal mine entrances and coal washing plant material yards that require rapid processing of raw coal.
2.Reduced Equipment Investment and Operating Costs, Higher Cost-Effectiveness
From a cost perspective, the "integrated design" of Motek screening and crushing bucket significantly reduces equipment investment and subsequent operating expenses for enterprises:
Lower Equipment Procurement Costs: Traditional models require separate purchases of screening machines, crushers, conveyor belts (for material transfer), etc., with total procurement costs typically 2-3 times that of the screening and crushing bucket; while Motek screening and crushing bucket only requires one main unit (such as a loader), eliminating the need to purchase multiple additional units, thus significantly reducing initial investment.
Lower Operating Costs: On the one hand, integrated operation reduces the number of devices, resulting in a reduction of over 30% in corresponding equipment maintenance and upkeep costs (such as screen replacement for screening machines and repair of wear parts for crushers); on the other hand, the elimination of the need for multiple devices to operate simultaneously reduces electricity or fuel consumption by 25%-35%, and also reduces the number of operators (traditional models require 2-3 people to operate the screening machine and crusher separately, while bucket operation only requires 1 person to operate the main unit), further reducing labor costs.
3.Adaptable to Multiple Operating Scenarios, Greater Flexibility
Coal processing scenarios are diverse, including underground coal mines (some low-ceilinged spaces), surface material yards, coal washing plant workshops, and even temporary coal-using sites in the field. Traditional screening and crushing equipment is large and heavy, requiring fixed installation or relying on large transportation equipment for relocation, making it difficult to adapt to complex scenarios. Screening and crushing buckets, however, have the advantages of "lightweight + mobile":
Small size and light weight (depending on the main unit model, the bucket weight is typically between 500-2000kg), adaptable to loaders and excavators of different tonnages, and even capable of operating in low-ceilinged underground spaces;
No fixed installation is required; the operating location can be changed by moving with the main unit. For example, after completing the initial processing of raw coal at the coal mine entrance, it can be directly transferred to the material yard for secondary fine screening, or it can accompany the engineering team to temporary coal-using sites in the field, meeting the need for "nearby processing" and avoiding losses and costs caused by long-distance material transportation.
4.Precise Control of Coal Particle Size to Improve Product Quality
Different scenarios have significantly different requirements for coal particle size: Household bulk coal requires uniform particle size (typically 0-30mm) to avoid incomplete combustion of large pieces; power plant coal requires fine particle size (0-20mm) to ensure thorough mixing with air and improve combustion efficiency; industrial boiler coal may require medium particle size (30-50mm). Traditional screening and crushing operations often result in problems such as inaccurate screening particle size and uneven particle size after crushing (e.g., large fluctuations in crusher output particle size, leading to some coal being too coarse or too fine). The screening and crushing bucket achieves precise particle control through "built-in grading screening + adjustable crushing gap": the screening mesh inside the bucket can be replaced as needed (e.g., replacing with 20mm or 30mm mesh screens) to first screen out coal of qualified particle size; for large pieces of coal, the particle size after crushing can be controlled by adjusting the gap of the crushing hammer inside the bucket (e.g., adjusting the gap to 20mm ensures that the maximum particle size of the crushed coal does not exceed 20mm), and the final output coal particle size uniformity can reach over 90%, significantly improving the market competitiveness of coal products (e.g., easier to sell for domestic use, and reduced risk of coking in the furnace for power plant use).
5.Fifth, reduced dust and material loss, better meeting environmental protection requirements.
In the traditional coal screening and crushing process, material transfer (e.g., loader shoveling, conveyor belt conveying) easily generates a large amount of dust, which not only pollutes the environment but also leads to coal particle loss (dust loss usually accounts for 5%-8%); at the same time, when the crusher operates outdoors, noise and dust pollution problems are more prominent, making it difficult to meet current environmental protection policy requirements. The "enclosed operation design" of the screening and crushing bucket effectively solves these problems: During bucket operation, coal is always screened and crushed within the enclosed bucket cavity, reducing the contact area between material and air, and decreasing dust emissions by 60%-70%. Simultaneously, the enclosed cavity reduces noise during the crushing process (15-20 decibels lower than traditional crushers), meeting the environmental emission standards of coal mines and coal washing plants. Furthermore, integrated operation reduces material transfer links, lowering the coal loss rate from the traditional 5%-8% to below 2%, reducing resource waste and economic losses for enterprises.
