CL. Analytics

SAMPLE PREPARATION

To obtain correct analytical results, it is necessary to select properly samples and prepare them for analysis. Samples are selected by the Customer.

If desired, the Customer informs the Laboratory of the chosen sample preparation scheme. If there is no such a scheme at the Laboratory, we offer our own scheme in accordance with OST 41-08-249-85 and follow it agreement with the Customer.

Main sample preparation activities performed at the Laboratory are:

sorting out samples upon receipt
preparation of a protocol of sample acceptance (a copy of the protocol is issued to the Customer)
primary drying
breaking
sample reduction (quartering)
duplicate selection
grinding (to a particle size of 200 mesh, 0.074 mm)
final check of the list

All samples received by the Laboratory are divided into 4 main types:

environmental (soil, plant samples, etc.)
general geochemical
ore and enriched samples
special (determination of gold and platinum group metals)

For the preparation of samples of each of the above types, there is separate room with equipment necessary for the entire technological cycle, i.e. sorting out, crushing, grinding, reduction, etc. Thus, samples of these four types are reliably isolated from one another in the process of preparation for analysis that excludes the possibility of their mutual contamination. To prevent the contamination of the subsequent sample from the previous one for each type of samples, following procedures are envisaged:

thorough cleaning of equipment from remnants of the previous sample using the industrial vacuum cleaner;
use of gangues after each sample; in the case of sufficient amount of sample material, it is possible to use part of the same sample instead of the gangue; the first processed part of the sample is thrown away.

The Laboratory has the following equipment for sample preparation:

Item	Manufacturer	Maximum size of the loaded material	Minimum final grinding	Mill sets	Purpose
Roll-jaw crushers ВВ 400	Retsch, Germany	Up to 50 mm	Less than 3 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Roll-jaw crushers ВВ 300	Retsch, Germany	Up to 150 mm	Less than 5 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Roll-jaw crushers ВВ 200	Retsch, Germany	40-50 mm	About 2 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Roll-jaw crushers ВВ 100	Retsch, Germany	30-40 mm	About 1 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Roll-jaw crushers SHCHD-10	OOO Vibrotekhnik, Russia	Up to 150 mm	Less than 5 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Roll-jaw crushers SHCHD-6	OOO Vibrotekhnik, Russia	Up to 60 mm	Less than 3 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Roll-jaw crushers DSHCH-60х100	OOO Mekhanobrtekhnika, Russia	Up to 50 mm	Less than 3 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Roll-jaw crushers DSHCH-80х150	OOO Mekhanobrtekhnika, Russia	Up to 80 mm	Less than 5 mm	Manganese steel	Crushing of hard, brittle, hard-viscous materials
Planetary-type sample grinder РМ 400	Retsch, Germany	Up to 5 mm	10-100 µm	Agate, silicon nitride	Grinding of hard, brittle, fibrous materials
Sample Grinder SM 2000	Retsch, Germany	80-60 мм, capacity up to 5 l	1-20 mm	Stainless steel, heavy metal free	Crushing of soft fibrous and volume material
Centrifugal mill ZM 100	Retsch, Germany	10 mm	0.1-1 mm	Stainless steel, heavy metal free	Crushing of medium-hard materials
Micromill MS 100	Retsch, Germany	4 mm	Up to 10 µm	Agate, boron carbide	Grinding of small sub-samples
Planetary mill MPL-1	OAO Disintegration Technology and technical devices, Russia	2-5 mm 300-500 µm	Up to 100 µm Less than 10 µm	Agate, corundum, stainless steel, rough steel	Fine grinding of hard, brittle fibrous materials
Attrition mill LDI	ОАО Grant, Russia	2 mm	70 µm; 0.1 mm 0.25 mm; 0.5 mm	Carbon silicide	Grinding of hard, brittle materials

In addition, there is the AS-200 sieving machine with a set of test sieves (from 25 mm to 20 μm) from Retsch, as well as a universal bath for cleaning the sieves (fast, efficient and gentle cleaning) and racks (the same company) for gentle storage of the sieves both in vertically and horizontally.

Сушильная камера Дробильная машина ВВ 300

Дисковые истиратели ЛДИ 65 Смеситель С 2.0

BB400 Retsch Смеситель С 50.0