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Designed specifically for the determination of the relative “hardness” or abrasive potential of coal. Unit is constructed in strict accordance with ASTM Designation D-409 and conforms to procedures proposed by ISO for the determination of the Hardgrove Grindability index of coal and coke.
Product Description
Preiser Scientific’s Grindability Tester is a compact precision built instrument designed specifically for the determination of the relative “hardness” or abrasive potential of coal. Unit is constructed in strict accordance with ASTM Designation D-409 and conforms to procedures proposed by ISO for the determination of the Hardgrove Grindability index of coal and coke.
Features
- Stationary lower steel grinding bowl is mated with an upper grinding ring consisting of eight steel
balls that rotate at 20 rpm. - Grinding ring is rotated by a motor/belt driven spindle to which 29 kg of removable weights are
attached that bear onto the eight rotating balls. - A counter/switch assemble totals the number of revolutions and automatically stops the machine
at the end of 60 revolutions. - Sample loading is remarkably easy because of the design of the machine.
- Machine is virtually maintenance free because high-quality and durable materials have been used
in the manufacture of this instrument. - Shipping weight: 180 lbs.
Preiser’s Hardgrove Grindability Family includes all equipment and supplies needed to test the grindability of coal by the Hardgrove machine method, ASTM D-409. Available in 115V or 220V, 50Hz or 60Hz versions. Family Includes:
| Catalog Number | Family Item |
| Z90-9300-01 | Grindability Tester, 115V/1PH/50-60Hz |
| 90-1712-46 | Electronic Balance |
| 90-2188-13 | Weight Set |
| 91-7987-01 | Sample Splitter |
| 91-8015-01 | Extra Drawer for Splitter |
| 91-9145-16 | ASTM Sieve, Brass/Stainless Steel Cloth, 5/8 Coarse Series |
| 91-9139-02 | ASTM Sieve, Brass/Stainless Steel Cloth, No. 4 Fine Series |
| 91-9139-06 | ASTM Sieve, Brass/Stainless Steel Cloth, No. 8 Fine Series |
| 91-9139-10 | ASTM Sieve, Brass/Stainless Steel Cloth, No. 16 Fine Series |
| 91-9139-14 | ASTM Sieve, Brass/Stainless Steel Cloth, No. 30 Fine Series |
| 91-9139-26 | ASTM Sieve, Brass/Stainless Steel Cloth, No.200 Fine Series |
| 91-9158-02 | Brass Bottom Sieve Pan |
| 91-9159-02 | Brass Sieve Cover |
| 91-9184-02 | Ro-Tap Sieve Shaker |
| 91-6455-01 | Laboratory Plate Mill Crusher |
| 90-9300-10 | Calibration Standard, 4/Set w/Certificate |
| 90-3170-01 | Riffler Brush |
| 90-3190-01 | Sieve Cleaning Brush, Brass Wire |
| 90-3200-01 | Sieve Cleaning Brush, Nylon Bristle |
Specifications
| Power | : | 115V; 50-60Hz; 1Ph |
| Compliant/Standard | : | ASTM D-409 |
| Manufacturer | : | Preiser Scientific |
| Model No. | : | Z90-9300-01 |
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Used for particle size analysis by separating a sample into different size fractions using a combination of horizontal oscillating and vertical tapping motions. It automates the sieving process to provide consistent and repeatable results for [...]
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