High whiteness bulk talcum powder brands manufacturer for papermaking use
PAPER GRADE TALC POWDER
Technical Data Sheet
Item number LMME-PAP92 LMME-PAP90 LMME-PAP88 LMME-PAP88
Whiteness ％≥ 92 90 88 88
Dust, mm2/g ≤ 0.4 0.6 0.8 1
CaCO3 ％≤ 1 1.5 2 4
Acid iron melted 0.2 0.3 0.5 0.5
(taking Fe2O3) ≤
PH 7-8.5 8.5-9.5
Moisture ％≤ 0.5 0.5 0.5 0.5
- ℃) ％≤6 8 12 22
Wear and tear 80 100 --- ---
(cooper net) mg ％≤
Oil-absorbed 20.0—50.0
Passing through 325mesh 98 (45µm) ％≥
Papermaking grade talc powder used for: all kinds of paper, color paper, label paper and cardboard packing, can improve the mechanical properties of paper, printing effect, reduce drying. Also can be used as a wood green control agent.
Product Description:Talc both in pulverized and brick forms, are used in this industry. Pulverized material of 200-300 BSS sieve is required as filler. It is used in the same way as china clay, that is, the talc powder is mixed with pulp before making into paper. A number of paper manufacturers are changing over from the use of china clay to French chalk as filler and loading material. The brightness in talc is 85 to 88º as compared to 75º in china clay. Since 1960, the consumption of talc in the paper industry has greatly increased. Paper industry requires talc powder, known as French chalk, of pure white quality. It should be free from gritty material. It should have law CaCO3content, not exceeding 4%; also FeO should not be more than 2%. Off-color variety of talc free from grit is used for brown, roofing or inferior type of paper. Soapstone bricks are used for lining pulp tanks in the paper industry.
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