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Rare earth\'s|Printable version
ChMP organized production of polishing powders on the basis of rare earth elements. The demand in rare earth products is constantly growing, and that means that organization of complete production process, from raw materials to finished products, in Russia is of great importance.

The range of rare-earth production:
Rare earth carbonates;
Rare earth oxide concentrates;
Polishing powders on the basis of rare-earth
oxides.

Company specialists are improving quality and developing new kinds of products. Further development of rare-earth production and production of new products are planned, which will result in production of:
wide range of polishing powders;
REO concentrates;
oxides and other compounds of separate rare-earth metals;
mischmetal;
nitrate solutions for petroleum industry.


Rare-earth carbonates
Used for production of polishing powders, REO and separate metals.
Specifications
Grade á - finely dispersed crystalline white or grey powder with different shades.
Grade B - damp white or grey paste with different shades.
 
Grade á Grade B
REO fraction of total mass
as culculated by dried product, %, not less
50 50
Cerium oxide fraction of total mass, %, not less* 50 50
Impurities fraction of total mass,%, not more tham*
- iron oxide 0.1 0.2
- calcium oxide 0.2 0.4
- sodium oxide 0.1 0.2
- sulphate-ion 0.1 0.3
- chlorine-ion 0.1 0.2
Moisture, %, not more 1.0 1.40
* - in relation to mass part of REO


REO concentrate of cerium group
Used in glass industry, in production of radioceramics and colouring agents, for alloy doping.

Specifications:
finely dispersed crystalline brown powder with different shades.

Parameter TU 330-96 TU 340-99
REO fraction of total mass, %. not less 97.0 90
Cerium oxide fraction of total mass, %, not less 50 50


Rare-earth oxides polishing powders.
Our specialists have developed the process of production of new quality powders on the basis of rare earth oxides. Traditionally high production culture of our enterprise and modern technologies guarantee stable quality of the product. Now the company produces universal polishing powder "Ftoropol" and semiuniversal powder "Optipol". The ChMP specialists are constantly improving the quality and broadening the range of our products.

Polishing powders "Ftoropol" and "Optipol"
are finely dispersed crystalline brown powders of different shades. It is the mixture of oxides and oxifluorides of the light group of rare earth elements (Ce, La, Nd, Pr, Sm).

Usage
"FTOROPOL" - is the universal powder for polishing wide range of optical glasses, glass lenses, mirrors and other glass products, electronic details (masks, semiconductor plates and others), jewelry and decorative materials. Powder can be used in all processing modes (pressure 0,1-3,0 bar, rotation speed - 100 - 2500 r/min) with the usage of bedding and autopower.They can be used in centralized systems, too. The used polishing materials are resins and pastes, polyurethane foam with filler "Ftoropol", polytan. When treating optical details we had the best results on chrome green glass and chemically resistant flintglasses (grades ë8, Bïë3, Lë5, F1, ôF1, ôF4, ôF5, ôF8, ôF9, ôF10, ôë14, LAK22, LAF28, LAM58, SF5, SF8, SK11, SSK4A, SFL57), also óôëZ. "OPTIPOL" is a semiuniversal powder, which showed good results when treating flat details from chrome glasses, such as mirrors, car and shop windows, crystals and ceramics. The used polishing materials are resins and polyurethane foam. Autopower machines. "FTOROPOL" and "OPTIPOL" are safe radioactively. In accordance with The Main Sanitary Rules of treating radioactive substances ïSP - 72/87, the State Sanitary Inspection Body of Russian Federation allowed the production and sales of these powders in Russia.

Specifications polishing powders

Parameters Values Method of definition
Ftoropol Optipol
Polishing, mg/30 min, not less 45 40 bedding, resin, gass-ë8, D=75 mm
Cerium dioxide total mass fraction in solid solution of oxide, %, not less 70 50 RFA
Fluoride-ion fraction of total mass, % 9-14 no neutron-activational
Average particle size, mkm 0.8 - 1.6 0.8 - 1.6 Kozeni-Karman (PSX-8áë)
Reaction of aqueous extract, pH 6 - 8 6 - 8 potentiometric
Presence of scratching impurities is absent is absent polishing of F4 glass grade
Specific alpha-activity, Bq/kg
(Ku/kg), not more than
7400
(2È10-7)
7400
(2È10-7)
radiometric


Polishing materials comparative specifications.

Powder Chemical analysis,
% weight
Fracti­onal anal­ysis, % of parti­cles with dimen­sions, mkm Total acti­vity, UA Sedi­man­tal sta­bili­ty, min Pol­ish­ing abi­lity, mg/30 min
Total REM CeO2 F 0-1 1-10 10
Optipol 99 55 ÎÅÔ 16 78 6 1.0 3 45
Ftoropol 85-91 75-90 8-14 18 77 5 1.0 5 55
Optical polirit (Kazakhstan) 98 53 ÎÅÔ 17 78 5 0.84 4 40
PF-O (Estonia) 84-89 70-85 9-14 47 43 10 0.18 5 45
Cerox 1650 (France) 92 66 3 21 78 1 0.22 3 60
Ce-Rite 4250 (USA) 85 70 4 16 79 5 27.3 3 34
Regipol (UK)                  
XTV-3 66-75 60-65 4.5 13 85 2 18.6 8 46
800 66-75 60-65 8 21 79 0 29.4 13 44
950 66-75 60-65 7.5 38 62 0 32.3 15 44
970 66-75 60-65 8 40 60 0 33.6 16 43
Maxim eves 66-75 60-65 8 25 75 0 41.1 14 44
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