Method for synchronously preparing sodium aluminate through aluminum ash soda sintering denitrification
A technology of sodium aluminate and aluminum ash, applied in the fields of mineral processing and non-ferrous metallurgy, can solve the problems of secondary pollution, high production cost, complicated process, etc., and achieve the effects of low cost, simple operation and low energy consumption
Active Publication Date: 2019-06-25
CENT SOUTH UNIV
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Abstract
The invention discloses a method for synchronously preparing sodium aluminate through aluminum ash soda sintering denitrification. The method comprises the steps that aluminum ash and mixed sodium salt prepared from sodium carbonate, sodium bicarbonate and sodium peroxide are mixed evenly, and pressed into agglomerates; the agglomerates are dried and sequentially placed in an air atmosphere to besubjected to first-section low-temperature roasting and placed in a strong-oxidizing atmosphere to be subjected to second-section intermediate-temperate roasting, roasted products are cooled and crushed, and then leached out by an alkaline solution, and thus a sodium aluminate solution is obtained. According to the method, industrial waste residue is utilized as a main raw material, the raw material source is wide, the cost is low, the aluminum recovery rate is high, operation is easy, the production cost is low, the environmental friendly effect is achieved, and industrial production requirements are met.
Application Domain
Alkali-metal aluminates/aluminium-oxide/aluminium-hydroxide preparation
Technology Topic
Air atmosphereSodium carbonate +10
Examples
- Experimental program(4)
- Comparison scheme(3)
Example Embodiment
Example Embodiment
Example Embodiment
PUM
Property | Measurement | Unit |
Diameter | 15.0 | mm |
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