fly ash beneficiation process
BinQ’s can be a Fly Ash Beneficiation Process plant manufacturers and supplier in China. We offer you Beneficiation euqipment for fly ash, processing equipment for fly ash, also you can expect fly ash grinding mill.
Fly Ash Beneficiation Technology
fly ash beneficiation process
This proprietary process converts waste from coal-fired power stations (fly ash) and separates the constituent minerals to generate a range of sustainable, environmentally-friendly products with unique physical and chemical characteristics.
An important advantage of BinQ froth flotation over other carbon separation techniques is it produces a high-grade coke product at high component recovery. Typically, our process produces coke products having a 92%-96% purity. The table below supplies a self-help guide to the performance of BinQ’s froth flotation in comparison to another carbon removal system, according to an assumed feed of 12% carbon.
The limiting constraint for the use of traditional fly ash as a possible Ordinary Portland Cement (OPC) substitute has been the carbon content (LOI). Underneath the BS EN 450-1:2005+A1:2007 specification the LOI content needs to be below 7% from the total fly ash. The BinQ process creates a superior low coke product.
Beneficiation for the Fly Ash Industry
Sturtevant has been supplying Air Classifiers for more than 70 years with plenty of industry applications, including Flyash. Most of the time, by air separating Flyash at 200-325 mesh (75-45 microns), product quality can be consistently achieved by manipulating the fineness and by decreasing the LOI carbon content by 50% or even more with a level that’s tolerable to use in cement, as a filler for land reclamation, soil improvement, lightweight aggregates, and agricultural uses. Everyday, Sturtevant Air Classifier installations not only make a saleable Flyash product, but also lessen the quantity of Flyash that will otherwise fill up landfills by 50%. Furthermore, scalping strategies save disposal costs and contribute to saving the environment.
Three Sturtevant Models are available to meet a number of needs. Some distinct advantages are -
Whirlwind Air Classifiers (100-400 mesh product sizes):
For power plants producing a consistent Flyash output, the Whirlwind may be the most economical selection. The Whirlwind Air Classifier incorporates a set speed self-contained fan and rejecter blade classification system. Its internal fan design uses low HP and does not require Cyclones, Airlocks or Baghouse to gather the fines. The feed is conveyed in to the air separator by gravity. The fines and coarse also exit air classifier by gravity. Major alterations in product fineness are achieved by changing the number of internal selector blades. Minor changes are achieved by adjusting the positioning of external control valves.
Side Draft Air Classifiers (100-400 mesh product sizes):
For power plants where Flyash output or desired Flyash market specifications can vary greatly, the SD Side Draft Air Classifier offers flexibility. The SD High Efficiency Air classifier incorporates a variable speed rotor design and produces better efficiencies with more versatility compared to the Whirlwind Air Classifier. By utilizing an external fan to build the device airflow, the rate of the independently driven rejecter cage can be adjusted according to various feed characteristics and thus, maintain consistent product fineness and quality. The feed is conveyed into the Air Classifier by gravity and the coarse exits from your bottom of the Classifier by gravity. The fines are pneumatically conveyed from the rejecter cage and collected inside a cyclone or dust collector. The SD also is sold with alumina ceramic liners for maximum wear protection.
The Superfine Air Classifiers (5-30 microns product sizes):
For power plants desiring to advertise towards the highly specialized pozzolanic cement manufacturers with ultra-high strength and high Blaine specifications. The Superfine Air Classifier includes a variable speed rotor with multiple, closely spaced rejecter blades and high-speed operation for ultra-fine and ultra-efficient applications. The system uses an external fan to generate the airflow and also the speed with the rejecter cage is adjusted in line with the desired fineness or perhaps a change in feed characteristics, thus producing superior product fineness and quality. The feed is conveyed in to the Air Classifier by gravity and the coarse exits from the bottom of the classifier by gravity. The fines are pneumatically conveyed through the rejector cage and collected in a product dust collector. Generally, the Superfine is suited for lower production rates of highly specialized ultra-fine products.