Chemical composition of schungite

 

Sanitation and epidemiological conclusion for schungite from Zazhoginskoe deposit

 

Extract from : SCHUNGITE POWDER. Technical specifications. TU 2169-001-57753937-2002

 

  1. TECHNICAL REQUIREMENTS

 

1.1 Schungite powder should comply with the given Technical specifications, and to be manufactured under processing requirements approved in accordance with the established procedure.

 

1.2 Schungite powder is produced with the following size of particles:

 

up to 0.10 micron, from 0.10 to 0.20 micron, from 0.20 to 60 micron

 

Particle-size distribution of powder supplied to a consumer, is specified by a contract.

 

1.3  Physical and chemical parameters of schungite powder should correspond to normative values, represented in the Table 1.

 

Table 1

Parameter

Normative value

1. Appearance

Finely dispersed powder, black color, without foreign substances.

2. Mass share of carbon, %, min

20

3. Mass share of loss at 105 0 , %, max

2.5

4. Ash content, %, max

75

5.Bulk density, g/dm3

400-500

6. of water extract

5.0-6.5

7. Mass share of residue, %, after screening through mesh with the size of

 

0.14

 

0.045

 

not more

 

Absent

 

0.05

8. Absorption of dibutyl phthalate, cm3/100 g

25-35

9. Specific adsorption surface, m2/g

15-20

 

1.3.1. Depending on application of schungite powder, additional parameters that define performance characteristics of ready products can be introduced.

 

 

  1. SAFETY REQUIREMENTS

 

 

2.1 Schungite powder is explosion-safe, non-inflammable, causes no skin irritation in case of contact.

 

2.2 Maximum allowable concentration of powder in the atmosphere of working area 2.0 mg/m3.

 

2.3 There is dust in the air at processing, packing and handling of schungite powder. Personal involved in such operations should wear working clothes according to the state standard GOST 12.4.016, and respirators according to GOST 12.4.041.

 

2.4 Enclosed premises used for operations with schungite powder should be equipped with ventilation system ensuring that dust content in the air would not exceed maximum allowable concentration.

 

2.5 Schungite powder is not toxic and does not provide harmful influence onto environment.

 

2.6 Schungite powder is a substance with low radioactivity, which enables to use it in all types of industrial products (NRS 99, norms of radiation standards).

 

 

List of standards and regulations referred in TU 2169-001-5773937-2002

 

Schungite powder

Designation of regulative document

Name of regulative document

GOST 12.4.016-83

Occupational safety standards system. Special protective clothes. Nomenclature of quality characteristics.

GOST 12.4.041-89

Occupational safety standards system. Individual respiratory protective devices, filtering. General technical specifications.

GOST 2226-88

Paper bags. Technical specifications.

GOST 7328-2001

Weights. General technical specifications.

GOST 9147-80

Porcelain ware and equipment for laboratory. Technical specifications.

GOST 14192-96

Cargo marking.

GOST 18307-78

White carbon. Technical specifications.

GOST 24104-2001

Laboratory scales. General technical specifications.

GOST 25336-82

Glassware and equipment for laboratory. Types, main parameters and sizes.

GOST 25699.1-90

Ingredients of rubber mix. Method of sampling of technical carbon.

GOST 25699.4-90

Technical carbon for production of rubber. Method of detecting adsorption surface.

GOST 25699.5-90

Technical carbon for production of rubber. Method of detecting dibutyl phthalate absorption.

GOST 25699.7-90

Technical carbon for production of rubber. Method of detecting losses at heating.

GOST 25699.8-90

Technical carbon for production of rubber. Method of ash content detection.

GOST 25699.10-93

Technical carbon for production of rubber. Method of detecting a mass share of residue after screening through mesh with the size of 0.045; 0.14, and 0.5 mm.

GOST 28498-90

Glass liquid-filled thermometers. General technical specifications. Testing methods.

OST 16.0.801.374-86

Resistance furnaces and electric furnace units, with periodic and continuous processing (excluding vacuum ones).

OST 16.0.801.397-87

Laboratory resistance furnaces.

NRS-99

Norms of radiation safety.

 

Table 1.

Chemical composition of schungite used as a filler for dry building mixtures (lost circulation material) under trade mark ALFAPOL

 

Element/component

 

Symbol

Content, % mass

1

Aluminum oxide

Al2O3

4.05

2

Iron (III) oxide

Fe2O3

1.01

3

Iron (II)oxide

FeO

0.54

4

Potassium oxide

2

1.23

5

Calcium oxide

0.12

6

Silicon oxide

SiO2

56.46

7

Magnesium oxide

gO

0.56

8

Manganese oxide

MnO

0.12

9

Sodium oxide

Na2O

0.36

10

Titanium oxide

TiO2

0.24

11

Phosphorous oxide

25

0.05

12

Barium

a

0.32

13

Boron

B

0.004

14

Vanadium

V

0.015

15

Cobalt

Co

0.00024

16

Copper

Cu

0.0037

17

Molybdenum

0.0011

18

Arsenic

As

0.00025

19

Nickel

Ni

0.0085

20

Lead

Pb

0.0023

21

Sulfur

S

0.57

22

Strontium

Sr

0.001

23

Carbon

C

26.26

24

Chromium

Cr

0.0078

25

Zinc

Zn

0.0067

26

Humidity

H2O

0.75

27

 

H2O

1.40