Recent Blogs
Elevator Dumping Head Mechanism: How It Works, Parts, Diagram & Critical RPM Formula
How an elevator dumping head works in mining and bulk handling — geometry, throw distance, capacity formula, worked example, and design tradeoffs.
Eight-stamp Ore Mill Mechanism: How It Works, Cam-Tappet Diagram, and Parts Explained
How an Eight-Stamp Ore Mill crushes hard-rock gold and silver ore — cam-lifted stamps, drop energy, throughput math, and real mining-camp examples.
Drill for Curved Holes Mechanism: How Bent-Sub Steering Works, Parts, Build-Rate Formula & Uses
How a drill for curved holes works in mining and tunnelling — flexible drill string mechanics, formulas, real applications, and design tradeoffs from FIRGELLI.
Disintegrator Mechanism Explained: How Counter-Rotating Pin Cage Mills Work, Parts and Uses
Disintegrator mining mill explained — how cage-style impact disintegrators reduce ore, sizing math, real applications, and tradeoffs vs hammer mills and rod mills.
Diamond Well-boring Machine Mechanism: How It Works, Parts, Diagram and Uses in Core Drilling
How a diamond well-boring machine cuts rock core for mineral exploration — bit design, RPM, WOB, and named applications across mining and geothermal drilling.
Diamond Prospecting Drill Mechanism: How Core Drilling Works, Parts and Cross-Section Diagram
Diamond prospecting drills cut continuous rock core for mineral exploration. See how the bit, core barrel, and rod string work together with worked numbers.
Continuous Ditching Dredge Mechanism: How Bucket Chain Excavators Work, Parts, and Production Formula
Continuous ditching dredges cut and remove spoil in one pass. See how the bucket ladder works, sizing math, and real placer mining and drainage examples.
Coal-loading Tipple Mechanism: How It Works, Parts, Diagram, and Throughput Formula Explained
How a coal-loading tipple works — the mine-mouth structure that dumps, screens, and loads mine cars into railcars or barges at 200-2,000 tons per hour.
Coal-cutting Machine Mechanism: How It Works, Drum Diagram, Pick Lacing & Cutting Rate Formula
Coal-cutting machines undercut the seam mechanically using a chain or drum cutter. Learn the kinematics, sizing formula, and a worked longwall shearer example.
Coal Dust Press Mechanism: How Roll Briquetting Works, Parts, Formula & Uses Explained
Coal dust press mechanism explained — how briquetting rolls compact pulverized coal fines into fuel briquettes for steel, cement and household heating markets.
Clam-shell Bucket Mechanism: How Rope and Hydraulic Grabs Work, Parts, Uses and Closing Force
Clam-shell bucket explained: how the rope or hydraulic jaws close on bulk material, sizing math, and real dredging and mining applications.
Chili Mill Mechanism Explained: How the Chilean Edge-Runner Trapiche Grinds Gold and Silver Ore
Chili mill explained — how the rotating edge-runner stones crush ore, where it fits in small-scale gold milling, plus sizing math and a worked example.
Chain Scraper Conveyer Mechanism Explained: How It Works, Parts, Diagram, Capacity Formula and Uses
Chain Scraper Conveyor explained: how flight bars drag bulk material through an enclosed trough, sizing math, and real mining and power-plant examples.
Centrifugal Separator Mechanism: How It Works, Parts, Diagram, and Gold Recovery Uses Explained
How a Centrifugal Separator works in mineral processing — g-force, cut size, and sizing math for gold, tin, and tantalum recovery circuits.
Cable Conveyer Mechanism: How It Works, Diagram, Parts, Formula and Mining Uses Explained
Cable Conveyor explained — how a steel rope haulage system moves bulk ore through mines, with sizing math, real installations, and design tradeoffs.
Box-wing Blower Mechanism: How It Works, Parts, Formula and Mining Ventilation Uses Explained
Box-wing Blower explained — how the dual-airfoil rotor moves high-volume mine ventilation air, sizing math, applications, and a worked example.
Belt Conveyer Mechanism Explained: How It Works, Parts, Diagram, and Mining Uses
Belt conveyors move bulk ore, coal, and aggregate over long distances. Learn how they work, how to size belt speed and capacity, and where mining...
Automatic Ore Dump Mechanism Explained: How It Works, Parts, Diagram and Tipping Formula
How an Automatic Ore Dump works in mining and model railroading — trip mechanisms, tipping geometry, and sizing math for reliable bulk discharge.
Automatic Dumping Car Mechanism Explained: Granby Trip Dumping, Parts, Tip-Angle Diagram and Uses
Automatic dumping cars haul and self-discharge ore in mines and quarries. Learn how the trip mechanism, pivoting body, and counterweight work — with worked sizing...
Arc Tappet Valve Motion: How It Works, Diagram, Parts, Formula and Mining Uses Explained
Arc Tappet Valve Motion explained — how mining stamp mills and rock drills use cam-driven arc tappets to time valve lift, with formulas, specs, and...
Arastra Ore Mill Mechanism: How the Drag Stone Gold and Silver Ore Grinder Works
Arastra ore mill explained — how Spanish-era drag-stone mills crush gold and silver ore, with formulas, worked examples, and real mining applications.
Air Blast for Moving Coal Mechanism Explained: How Pneumatic Coal Conveying Works, Parts, and Uses
How air blast systems move coal in mining and power plants — pressure, velocity, pipe sizing, and worked example for pneumatic coal conveying.
Windmill of Our Grandfathers: Mechanism, Parts, and How the Back-Geared Head Pumps Water
How the classic farm windmill of our grandfathers pumps water — sail design, gear ratios, stroke length, and real homestead sizing examples from FIRGELLI.
Wind Instruments Mechanism Explained: How Air Columns, Reeds, and Bores Produce Pitch
How wind instruments convert air pressure into pitched sound — the physics, the bore math, and real builds from pipe organs to brass band cornets.
Wind Gauge Mechanism Explained: How Anemometers Work, Parts, Formula, and Uses
Wind gauge explained — how anemometers measure wind speed, the cup formula, calibration drift, and real applications in wind farms, aviation, and crane safety.