BS ISO 10086-2 pdf download

BS ISO 10086-2 pdf download Coal — Methods for evaluating flocculants for use in coal preparation — Part 2: Flocculants as filter aids in rotary vacuum filtration systems
1 Scope
This part of lSO 10086 specifies a method for the comparative evaluation of the performance of flocculantsused as filter aids for rotary vacuum filtration applications on a given slurry.
Normative references
The following referenced documents are indispensable for the application of this document. For datedreferences，only the edition cited applies. For undated references,the latest edition of the referenceddocument (including any amendments)applies.
ISO 10086-1:2000,Coal — Methods for evaluating flocculants for use in coal preparation — Part 1: Basicparameters
3Principle
The performance of different flocculants on a given slurry is determined by measuring the cake yield andmoisture content.
A flocculant solution is added to an aliquot of slurry in a beaker. A flter leaf is then applied to the flocculatedsample and the cake thus produced on the apparatus is weighed wet, dried and reweighed. A measure of theefficiency of the flocculant is obtained from the cake yield and moisture content.
4Apparatus
Ordinary laboratory apparatus and the following.
NOTE The apparatus is generally arranged as shown in Figure 1.
4.1Laboratory vacuum pump or piped vacuum system, capable of producing a vacuum better than thatproposed for the plant equipment.
4.2Vacuum gauge
4.3Two-way valves, of at least 2 mm to 3 mm bore,manufactured in glass or plastics.4.4 Buchner flask, with a minimum volume of 1 L.
4.5 Filter-leaf apparatus, consisting of a drainage plate and filter cloth in an assembly, as shown in Figure 4.
4.6 Vacuum tubing and glass/plastics tubing
4.7 Stirrers, motorized variable-speed stirrers, capable of speeds up to 1 000 r/min, one for flocculant preparation and one for sample homogenization.
4.8 Syringes, having capacities of 1 ml, 2 ml, 5 ml, 1 0 ml and 50 ml.