Summary: This article highlights the advantages of the SBM LM-Y Vertical Pre-grinding Roller Mill, which solves the challenge of aggregate grading in mortar. A single machine replaces two sets of equipment, requiring minimal floor space and low investment. The sand-to-powder output ratio can be customized according to mortar formulations, and free production line planning is available.
Dry-mixed specialty mortar and permeable paving brick aggregates require a uniform gradation of sand and gravel combined with fine powder. Traditional production lines separate sand making and powder grinding, resulting in two sets of equipment that require significant investment, occupy a large footprint, involve cumbersome processes, and incur high operating costs. The SBM LM-Y Vertical Pre-grinding Roller Mill achieves dual functionality in a single machine, simultaneously producing qualified aggregate sand and matching fine powder, making it the optimal equipment for mortar aggregate processing.
The LM-Y Vertical Pre-grinding Roller Mill integrates ultra-fine crushing, sand making, and powder grinding into a single unit. After raw materials are crushed, they enter the main grinding chamber directly, producing finished sand ≤3mm and matching fine powder in a single pass. The gradation of the finished product is controllable, perfectly addressing the industry pain points of poor gradation and insufficient fine powder output associated with conventional sand-making equipment. It meets the aggregate requirements for various building materials, including exterior wall putty, waterproof mortar, and self-leveling mortar.
The equipment features a compact overall structure, requiring significantly less floor space than split-type sand-making and grinding production lines. It can be installed outdoors, substantially reducing civil engineering costs for factory buildings. Internal wear parts are made of wear-resistant alloy, which slows down wear rates, extends maintenance intervals, and lowers daily operation and maintenance costs. The entire machine offers high production efficiency and low energy consumption, meeting the requirements for low-carbon production of green building materials.
Equipment models range from LM19-2Y to LM27-3Y, with hourly capacities of 30–220 metric tons. Large-scale parallel operation of multiple units can achieve an ultra-high capacity of 900 metric tons per hour. The equipment is suitable for processing medium- to low-hardness ores such as limestone, quartzite, and marble; stable production is achievable with feed sizes ≤35 mm and raw material moisture content ≤3%. The entire system is equipped with a dust collection system, eliminating dust pollution and simplifying environmental compliance inspections.
Many mortar processing plants are unclear about how to adjust the sand-to-powder ratio and are concerned that the equipment’s output ratio may not match their mortar formulations. If you are planning a specialty mortar aggregate production line and need to customize the sand-to-powder output ratio or calculate the total equipment investment, please leave a message via Business Messenger specifying the mortar type and hourly production capacity. SBM engineers will customize equipment parameters and production line layouts based on your formulation.
