FIELD: manufacturing processes in hydro-metallurgic production, namely production of alumina by sintering method.
SUBSTANCE: method of decomposition of aluminate solutions by carbonization comprises steps of mixing them with gases containing CO2 in presence of aluminum hydroxide seed; separation of liquid from particles of aluminum hydroxide formed during crystallization process; further processing it to alumina. At carbonization of aluminate solutions, aluminum hydroxide containing at least 75% of particles with size exceeding 40 micrometers is introduced as seed at seed relation in range 0.05 - 0.4. Invention allows to increase quantity of aluminum hydroxide with particle size + 40 micrometers.
EFFECT: enhanced efficiency of method.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CARBONISATION OF ALUMINATE SOLUTIONS | 2009 |
|
RU2424980C2 |
| METHOD OF DECOMPOSING ALUMINATE SOLUTIONS | 2015 |
|
RU2612288C1 |
| METHOD OF PRODUCING ALUMINIUM HYDROXIDE | 2016 |
|
RU2638847C1 |
| METHOD OF DECOMPOSING ALUMINATE SOLUTIONS WHEN PROCESSING NEPHELINE RAW MATERIAL | 2014 |
|
RU2599295C2 |
| METHOD OF PROCESSING ALUMINATE SOLUTION IN PRODUCTION OF ALUMINA FROM NEPHELINE | 2000 |
|
RU2184703C2 |
| METHOD OF PROCESSING ALUMINATE SOLUTIONS | 2000 |
|
RU2200706C2 |
| METHOD OF RECEIVING OF SANDY ARGIL AT REPROCESSING OF ARGIL-BEARING RAW MATERIAL BY METHOD OF SINTERING | 2005 |
|
RU2381992C2 |
| METHOD OF PREPARING ALUMINA AND GALLIUM FROM BAUXITE | 1999 |
|
RU2174955C2 |
| METHOD OF PROCESSING ALUMINA-BEARING STOCK | 2012 |
|
RU2489354C1 |
| METHOD OF PROCESSING ALUMINA-CONTAINING RAW MATERIAL | 2007 |
|
RU2361815C1 |
