Automatic Coal Caking Index Mixer Four Crucible Laboratory Stirring System

Product Overview

This system is an automated, benchtop sample preparation instrument engineered to operate alongside coal caking index determination apparatus. Built to eliminate manual blending inconsistencies, the equipment provides automated mechanical agitation for mixing pulverized coal samples with standard anthracite. By replacing operator-dependent swirling and stirring routines with a repeatable electromechanical process, the instrument guarantees standardized sample homogeneity across four simultaneous testing positions.

Designed primarily for metallurgical coal evaluation, coking facilities, geological research institutions, and third-party inspection laboratories, this unit enforces strict adherence to national and international coal testing standards. Its precision mechanics ensure that sample preparation parameters—including rotational velocity, angular inclination, and stage durations—remain invariant between analytical runs. This standardization makes it an indispensable asset for commercial laboratories handling large sample volumes under rigorous quality management regimes.

Engineered for continuous benchtop operation, the mixer combines a compact mechanical footprint with high-reliability electronics. The low-vibration structural architecture stabilizes all four sample positions during dynamic angle changes, while the integrated microcomputer manages drive profiles with exceptional repeatability. Procurement teams and laboratory managers can rely on this instrument to streamline laboratory workflows, decrease labor overhead, and safeguard the absolute integrity of downstream coking property evaluations.

Key Features

• Simultaneous Four-Position Capacity: The equipment features a synchronized four-crucible testing array that allows operators to prepare four coal samples concurrently. This multi-station architecture quadruples sample throughput relative to single-station units, drastically reducing bottleneck delays in high-volume industrial testing environments.
• Automated Two-Stage Kinematic Agitation: The unit executes a dual-phase kinematic routine that precisely matches standardized caking index preparation protocols. The mechanical assembly automatically manages both the rotational stirring dynamics and the positional transition from an inclined state to a vertical orientation without requiring operator oversight.
• Dual Synchronized Rotational Drives: Engineered with decoupled rotational axes, the system drives the stirring rods at a consistent 150 r/min while simultaneously rotating the crucibles at 15 r/min. This calibrated differential velocity creates optimal convective mixing paths throughout the anthracite and coal mixture, preventing sample stratification and ensuring thorough particle contact.
• Precision Angular Motion Control: During the primary mixing phase, the system maintains a rigid 45° inclination angle for exactly 1 minute and 45 seconds (105 seconds) to induce gravity-assisted shearing. It then executes an automated 15-second mechanical transition to return the crucibles smoothly to an upright 90° vertical orientation while continuing the agitation cycle.
• Automatic Vertical Homing on Startup: An integrated positional sensor array triggers an automatic vertical adjustment sequence whenever the unit powers on. This self-calibrating homing cycle guarantees that all stirring shafts and crucible holders align perfectly perpendicular to the base plate prior to sample mounting, preventing mechanical misalignment and shaft deflection.
• Ergonomic Quick-Release Spring Clamping: Crucible retention is achieved via heavy-duty manual compression springs that lock sample vessels securely during high-speed agitation. Operators simply press down on the spring collar to load or extract crucibles in seconds, eliminating threaded fasteners while maintaining a zero-intervention policy during the automated mixing cycle.
• Microcomputer Digital Timing and Display: A built-in industrial microcomputer governs all operational cycles with quartz-crystal timing precision. The high-contrast LED digital display provides immediate visual feedback on elapsed cycle times, operational status, and stage transitions, ensuring transparent process supervision across the entire laboratory shift.
• Ultra-Low Power Benchtop Architecture: Operating at an energy-efficient rated power consumption of just 12W, the instrument delivers high-torque agitation without parasitic heat generation. The compact chassis (400 × 350 × 340 mm) optimizes precious laboratory bench space, while its lightweight structural design permits effortless repositioning across workstations.

Applications

Technical Specifications

Why Choose This Product

• Elimination of Operator Discrepancies: Manual sample mixing in caking index evaluations has historically suffered from inter-operator variability in stirring stroke, angle control, and timing. This automated instrument replaces manual agitation with microcomputer-driven kinematics, ensuring identical preparation dynamics across every test batch.
• Precision Compliance with Test Standards: Engineered specifically around standardized coal assay protocols, the instrument executes exact 45° inclinations, fixed 150/15 r/min differential velocities, and precise 105-second/15-second timed transitions, ensuring immediate compliance with industrial testing norms.
• High-Throughput Quad-Crucible Layout: Processing four sample vessels simultaneously allows laboratory personnel to handle heavy daily workloads in a fraction of the time required by single-position devices. The quick-action spring-release holders minimize setup overhead, keeping operational focus on core analytical tasks.
• Durable, Low-Maintenance Build Quality: Featuring a rigid drive assembly, low-vibration internal mechanics, and a negligible 12W power draw, the equipment is designed for extensive operational lifespans with minimal routine maintenance. Its resilient enclosure resists standard laboratory dust and particulate contamination common to coal processing environments.

To optimize your metallurgical coal quality assurance program with high-precision sample preparation equipment, contact our technical sales team today for customized quotations, delivery timelines, and full system integration support.

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