SU1377707A1 - Method of determining specific surface of sulfide minerals - Google Patents
Method of determining specific surface of sulfide minerals Download PDFInfo
- Publication number
- SU1377707A1 SU1377707A1 SU864039152A SU4039152A SU1377707A1 SU 1377707 A1 SU1377707 A1 SU 1377707A1 SU 864039152 A SU864039152 A SU 864039152A SU 4039152 A SU4039152 A SU 4039152A SU 1377707 A1 SU1377707 A1 SU 1377707A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- specific surface
- powder
- sulfide
- value
- analyzed
- Prior art date
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
со -к|with-to |
Изобретение относитс к физико- химическому анализу и можег найти применение в лабораторной практике.The invention relates to physicochemical analysis and can be used in laboratory practice.
Цель изобретени - ускорение и повышение точности определени удельной поверхности порошков сульфидных минералов.The purpose of the invention is to accelerate and improve the accuracy of determining the specific surface area of sulfide mineral powders.
Пример. Навеску анализируемог го порошка помещают в кювету на фильтровальную бумагу выравнивают и закрывают сверху фильтровальной бумагой. В кювету заливают 1%-ный (мае.) раствор сульфида натри и пропускают этот раствор через анализируемый порошок, создава под навеской разр жение, обеспечивающее пропускание раствора 4 - б с. .Измер ют значение потенциала, сульфид-селективного электрода в растворе сульфида натри до и после контакта с ан;али- зируемым порошком. Значение удельной поверхности порошка определ ют по формуле S К(Е.,-Е), . Значение коэффициента К определ ют с использованием эталонного порошка с изве стной удельной поверхностью путем проведени операций по измерению значени потенциала сульфид-селективного электрода до и после контакта раствора с порошком сульфидного материала .Example. A portion of the analyzed powder is placed in a cuvette on a filter paper, leveled and covered with filter paper on top. A 1% (May) solution of sodium sulfide is poured into the cuvette and the solution is passed through the powder to be analyzed, creating a discharge under the charge, allowing the solution to pass through 4 - b c. . The potential value of the sulfide selective electrode in the sodium sulfide solution is measured before and after contact with the anilized powder. The value of the specific surface of the powder is determined by the formula S K (E., - E),. The value of the coefficient K is determined using a reference powder with a known specific surface by performing measurements to measure the potential value of the sulfide-selective electrode before and after contacting the solution with the powder of the sulfide material.
1 г пирита с величиной удельной поверхности S 440 см /г, помещают в кювету и заливают 100 мл 1%-ного (мае.) раствора сульфида натри , пропускают раствор через слой пирита и определ ют значени Е., и Е равными 640 и 552 мВ соответственно, исход 1 g of pyrite with a specific surface area of S 440 cm / g is placed in a cuvette and 100 ml of a 1% sodium sulfide solution (May) is poured, the solution is passed through a layer of pyrite and E. values are determined, and E is 640 and 552 mV respectively, the outcome
из которых значение К определ ют равным 3,73 см /г мВ.of which the value of K is determined to be 3.73 cm / g.
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За врем контакта менее 4 с равновесие между поверхностью анализируемого порошка и электролитом не успевает установитьс , при времени контакта больше 6 с может наблюдатьс окисление сульфид-ионов на поверхности порошка растворенным кислородом , что снижает точность определени удельной поверхности.During the contact time of less than 4 s, the equilibrium between the surface of the powder being analyzed and the electrolyte does not have time to be established; with a contact time of more than 6 s, oxidation of sulfide ions on the surface of the powder with dissolved oxygen can be observed, which reduces the accuracy of determining the specific surface.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864039152A SU1377707A1 (en) | 1986-01-16 | 1986-01-16 | Method of determining specific surface of sulfide minerals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864039152A SU1377707A1 (en) | 1986-01-16 | 1986-01-16 | Method of determining specific surface of sulfide minerals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1377707A1 true SU1377707A1 (en) | 1988-02-28 |
Family
ID=21227177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU864039152A SU1377707A1 (en) | 1986-01-16 | 1986-01-16 | Method of determining specific surface of sulfide minerals |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1377707A1 (en) |
-
1986
- 1986-01-16 SU SU864039152A patent/SU1377707A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Митрофанов С.И. н др. Исследоваг ние полезных ископаемых на обогати- мость.-М.: Недра, 1974, с.131-132. Соминский Д.С. и др. Прибор дл определени поверхности дисперсных материалов методом БЭТ. М.: Пром- стройиздат, 1957, с.8. * |
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