MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202511126327 A) filed by Raghav Productivity Solutions Private Limited, Jaipur, Rajasthan, on Dec. 13, 2025, for 'a method of producing a pre-classified fines stream using fine cone crusher with 30-mesh discharge.'

Inventor(s) include Sanjay Kabra.

The application for the patent was published on Jan. 23, under issue no. 04/2026.

According to the abstract released by the Intellectual Property India: "A method of producing a pre-classified fines stream using Fine Cone Crusher with 30-Mesh Discharge The present invention provides a method for producing a pre-classified fines stream using fine cone crusher with a 30-mesh discharge fraction in a refractory material production line, particularly for processing raw quartz or quartzite into silica-based refractories like ramming mass. The method comprises introducing the raw material into a preliminary jaw crushing stage to yield an initial reduced size output, advancing it to a secondary cone crushing stage to produce an intermediate particle distribution of about 6-40 mm, and supplying this to a tertiary fine cone crusher adapted to output particles including a fines component finer than 30-mesh alongside coarser particles up to approximately 25 mm via compressive fragmentation. The crushed product is conveyed to a vibratory screening apparatus for partitioning into a distinct 30-mesh fines stream and coarser streams, with the fines channelled via a segregated pathway to specialized storage silos for isolated retention. This pre-classification allows the fines to circumvent additional impact crushing, alleviating processing demands on ultrafine milling equipment dedicated to finer particle generation (e.g., 200 mesh). Dependent features include multi-deck screening for discrete size intervals, silos with ~100 m capacity under PLC-managed dispensing, magnetic separation of coarser streams, restricted impact processing to non-fines, air-classified milling, and automated proportioning for high-intensity mixing to formulate consistent refractory ramming mass. The approach enhances throughput consistency, minimizes equipment wear, reduces energy requirements, and improves homogeneity in downstream operations."

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