Caking Index Determination Apparatus Spare Parts and Consumables for Coal Quality Testing

Product Overview

This specialized suite of caking index determination apparatus spare parts provides certified hardware and calibrated consumables engineered for standardized coal adhesiveness and plastic mass evaluation. Designed to uphold analytical repeatability, this component ecosystem ensures precise sample preparation, uniform static consolidation, and dependable thermal carbonization during critical coal quality assessments.

Engineered for demanding industrial workflows, these spare parts support coke production plants, metallurgical steel facilities, commercial inspection agencies, and geological research laboratories. The complete assembly supplies all necessary replacement elements to formulate standardized coal-anthracite mixtures, execute static compaction, and conduct rapid high-temperature volatile matter expulsion.

Each replacement item is fabricated to withstand severe thermal cycling, corrosive volatile vapors, and abrasive mechanical wear. By maintaining strict compliance with established coal testing standards, this equipment eliminates analytical variances, protects test validity, and ensures dependable long-term laboratory operation.

Key Features

• Certified Standard Anthracite Reference Material: Sourced exclusively from the lower slice of the designated No. 2-1 coal seam within the Ningxia Rujigou mining basin, this calibrated anthracite strictly satisfies GB/T 14181-2010 quality standards to guarantee predictable volatile yield and structural carbon matrix consistency.
• Calibrated Gravimetric Static Presser: Built with a rigid mechanical alignment frame, this static consolidation device consistently applies an exact nominal load of 6.5 kg across sample crucibles to establish standardized packing density and eliminate operator-dependent compression errors.
• Oxidation-Resistant Nickel-Chromium Compacting Weights: Machined from premium nickel-chromium alloy, each cylindrical block maintains an exact mass between 110 g and 115 g with an axial relief hole, ensuring uniform top-layer compression without thermal warping or surface scaling at high operating temperatures.
• Thermal-Shock Resistant Porcelain Crucibles and Lids: Fabricated from high-grade refractory porcelain with a 30 mL volume and precise geometric taper, these vessels endure rapid insertion into 850°C furnace zones without micro-fissuring, sealing volatile matter effectively against atmospheric oxidation.
• Rigid Nickel-Chromium Wire Crucible Stand: Constructed from heavy-gauge 3 mm to 4 mm heat-resistant nickel-chromium wire, this 4-position rack retains level structural geometry under extreme heat, facilitating rapid, balanced batch handling and uniform thermal exposure inside the furnace chamber.
• Standardized Rigid Metal Stirring Wires: Formed from durable 1.0 mm to 1.5 mm hard metal wire featuring an 8 mm circular loop and an ergonomic handle, these precision tools ensure rapid, homogeneous blending of coal and anthracite without bending or shedding metallic particles.
• Strict Dimensional Standardization: Every component is precision-machined to exact dimensional tolerances conforming to GB/T 5447 guidelines, guaranteeing immediate interchangeability with standard coking test furnaces and laboratory apparatus.
• Corrosion and Oxidation Resistance: High-grade metallurgical alloys and inert ceramic compounds resist degradation from hot coal gases, sulfur dioxide, and heavy tar fractions, preserving gravimetric accuracy over extended analytical runs.

Applications

The determination of coal caking index provides essential predictive insight into the plastic, swelling, and agglomerating properties of bituminous coals during high-temperature carbonization. The following table highlights typical industrial and laboratory applications where these precision spare parts are essential.

Technical Specifications

The following tables detail the technical parameters, structural dimensions, material compositions, and manufacturing standards for the complete suite of replacement components and reference consumables.

Component Portfolio and Model Identification

Comprehensive Dimensional and Mechanical Tolerances

Procedural Integration and Testing Protocol

To ensure audit-ready analytical results in compliance with GB/T 5447, these components are utilized in a standardized analytical sequence:

1. Sample Proportioning and Preparation: Precisely 1.00 g of air-dried pulverized coal sample (<0.2 mm particle size) is weighed into the ceramic crucible alongside 5.00 g of the standard anthracite reference material.
2. Mechanical Homogenization: Using the rigid metal stirring wire, the operator blends the two components for 1 minute with a standardized circular motion, ensuring uniform distribution of coking and inert coal grains without loss of fines.
3. Surface Flattening and Static Consolidation: The coal mixture surface is leveled horizontally, and the nickel-chromium compacting weight block is centered directly on top of the bed. The crucible is placed into the static pressure device, where a constant 6.5 kg force is applied vertically for exactly 30 seconds to produce a consolidated, uniform cylindrical coal cake.
4. Controlled Pyrolysis: With the compacting block remaining seated on the sample, the crucible lid is fitted tightly. Four crucibles are loaded simultaneously into the nickel-chromium wire stand and introduced into a high-temperature volatile determination furnace maintained at 850°C ± 10°C for precisely 15 minutes.
5. Abrasion Resistance Assessment: Following cooling in a desiccator, the carbonized residue undergoes standardized tumbling cycles within a specialized drum apparatus and subsequent sieving to determine the final G-index value.

Why Choose This Product

• Certified Metrological Standard Compliance: Every batch of standard anthracite and each precision-machined hardware accessory conforms strictly to GB/T 14181-2010 and GB/T 5447 criteria, providing complete auditability for accredited ISO/IEC 17025 coal testing laboratories.
• Superior High-Temperature Metallurgical Integrity: Machined from premium oxidation-resistant nickel-chromium alloys and thermal-shock-resistant refractory ceramics, these components resist creep, warping, and mass loss through repetitive 850°C thermal cycles.
• Exceptional Gravimetric and Dimensional Consistency: Strict manufacturing tolerances across static pressure loading fixtures, compacting weights, and crucibles eliminate instrument-induced artifacts and optimize cross-laboratory reproducibility.
• Seamless Interoperability with Standard Testing Infrastructure: Designed as a cohesive testing ecosystem, each accessory integrates directly into existing laboratory muffle furnaces, drum tumblers, and sample preparation stations without requiring mechanical adjustments.
• Responsive Global Supply and Batch Traceability: Backed by comprehensive inventory reserves and dedicated technical support, replacement consumables and certified reference coals are supplied promptly to prevent operational downtime.

Contact our technical sales engineers today to request a quotation, review batch inspection certificates, or establish scheduled consumable delivery agreements for your laboratory.

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