spray drying machine

slag vertical mill

Mineral slag refers to the ore residue made in mining. To better make use of the mining sources and guard atmosphere, we need to disposal people mineral slags. There are slag cement, Portland slag cement, mineral cotton, blast furnace slag, copper slag and granulated blast furnace slag powder. As of now, mineral slag has been extensively made use of in industries, like in the cement production. Concerning the mineral slag pulverizing, it can be mixed with clinker or gypsum for co-grinding. Also, it could be grinded independently after which blended with clinker or gypsum.

Slag Processing Plant

Slag ore immediately after benefielation or smelting residues, is the current of industrial misuse, not just requires up a whole lot of land in the accumulation of a massive number of slag caused serious air pollution and destruction, but additionally towards the ecological atmosphere in China, China's financial improvement and peoplethe lives and safety in the masses pose a severe menace.
Slag processing and complete utilization of technologies, slag vertical roller mill the most direct processing equipment, it can slag grinding into a fine powder, which can then be employed in new building materials of slag Portland cement, slag concreteproduction. Therefore, slag mill of choice is essential, and its performance will directly affect the slag fineness, performance and application effect.

spray drying machine

Following fresh air is filtered and heated, it enters into the air distributor which on the top of the drier. The hot air in spiral form equably enters into the drying room. When liquid raw material are passed through the high-speed centrifugal sprayer on the top of the tower, it might be rotated and sprayed into the extreme slim mist liquid beads. Raw material can be dried to the final products instantly while it contact using the heated air. Finished products are discharged continuously from bottom from the drying tower and cyclones segregator. Wasted air is discharged from blower.

spray drying machine Application

Pharmacy: Hydroxy starch, Vitamin, Spirulina and so on. Chemical Industry: Sodium fluoride (potassium), alkaline dyestuff and pigment, herbicide, pesticides, antiseptic, dyestuff intermediate, compound fertilizer, formaldehyde silicic acid, catalyst, sulphuric acid, amino acid, white carbon, Cupric hydroxide, Cobalt hydroxide, Cobatt Oxalate and so on.
Plastics and resin: AB, ABS emulsion, uric acid resin, phenolic aldehyde resin, urea -formaldehyde resin, formaldehyde resin, polythene, poly-chloroprene and so on..
Food Industry: Fatty milk powder, protein, cocoa milk powder, substitute milk powder, egg white (yolk).
Food and plant: oats,chicken juice, coffee, instant dissoluble tea, seasoning meat, protein, soybean, peanut protein, hydrolysate, saceharin sodium and so on.
Sugar: corn oar, corn starch, glucose, pectin, malt sugar, sorbic acid potassium and so on.
Ceramic: aluminium oxide, ceramic tile material, zifconia magnesium oxide, talcum and so on.

spray drying machine Features

Fast drying speed: just after spraying into small drops, contacting area greatly increased. So when these small drops contact with hot air, 95%-98% water will likely be evaporated sonly in 5-35seconds. It is specially suitable for heat sensitive material.
Because product is dried in hot air, so shape of product keeps the same as sprayed drops. It is well dispersed ball shape with good flowability and solubility.
Stable operating: it is automatic and continuous operating equipment which is easy for controlling and adjusting.
Simplified working process: it is suitable for drying slurry with water content between 40%-90%. It will produce uniformed powder and save process like grinding and sieving. Operating condition is excellent and avoid ash leaking during drying process.
Raw material might be solution, slurry, emultion, supension, paste, melting material, or even caky material.

Double-loop wet scrubbing

DLWS as the washing process with limestone slurry absorber, the desulfurization process is divided into two phases, namely the loop together with the next loop, shown in Figure 1. Synthesized in a two-stage absorber. Limestone slurry to separate into upper and lower loop, along the tangent direction with the flue gas into the absorber under the loop, the flue gas is cooled to saturation temperature, while part in the SO2 is absorbed to generate limestone gypsum (CaSO4 ?¡è 2H2O). Cooling of the flue gas into the absorber spray area on the circuit, well-washed to achieve maximum absorption rate of SO2, SO2 into calcium sulfite, eventually absorbed by the air oxidation product of calcium sulfate crystals (gypsum) slurry containing solid volume of 15%. Just after dehydration, according to the application demands the formation of commercial gypsum plaster or disposable.
DLWS process is characterized by upper and lower PH values ??with the control loop, the loop PH value (5.8-6.5) higher SO2 removal rate for the maximum, the next loop in the PH value (4-5) The less easily dissolved limestone , absorbent utilization, cost reduction. System desulfurization efficiency up to 95%.

Spray drying FGD (SDA semi-dry)

SDA FGD with Ca (OH) 2 slurry for FGD absorbent, by centrifugal rotary atomizer or air-atomizing nozzle to spray dry absorber in the absorber inside of the spray. Hot gas into the absorber absorbing agent in contact using the spray, three kinds of simultaneous heat and mass transfer;
1.the acid gas from the gas phase mass transfer into droplets;
2.absorbed acid gases and dissolved Ca (OH) 2 chemical reaction;
3.within the water droplets evaporate.
Absorption from the product immediately after drying (mainly CaSO3.1/2H2O) together together with the fly ash collected within the absorber in the bottom or dust collector. Process see Figure 2. SDA process in ideal working conditions, the removal efficiency of 80% -90%. Characterized by-products are solid, there is no wastewater. But absorbent Ca (OH) 2 higher prices, operating costs are not low.