44results about How to "Good for roasting" patented technology

The invention provides a method for extracting aluminum oxide from coal gangue and co-producing active calcium silicate, and relates to the technical field of producing aluminum oxide and the active calcium silicate. The method comprises the following steps of: grinding coal gangue, and roasting and activating the ground coal gangue; performing alkali soluble desilication of coal gangue clinker to obtain desilication coal gangue and solution of sodium silicate; performing causticizing reaction of the solution of sodium silicate to obtain water-containing calcium silicate and solution of sodium hydroxide, and drying the water-containing calcium silicate to obtain micro powder of active calcium silicate; adding limestone and solution of sodium carbonate into the desilication coal gangue, and ball-grinding the mixed solution to obtain raw slurry; dissolving out the clinker which is obtained by roasting the raw slurry with water to obtain crude solution of sodium aluminate and silicon andcalcium residues, wherein the silicon and calcium residues can be used as cement raw materials after post-treatment; performing deep desilication of the crude solution of sodium aluminate to obtain the purified solution of sodium aluminate; feeding CO2 into the purified solution of sodium aluminate to obtain aluminum hydroxide and solution of sodium carbonate; and calcining the aluminum hydroxideto obtain the aluminum oxide products. The method has the advantages of simple process, low production cost, low energy consumption and little consumption of raw materials; in addition, by the method, two kinds of silicon-containing byproducts are simultaneously produced, and no waste is generated.

The invention discloses an industrial waste slag treatment equipment, which comprises a base, a crushing box, an auger conveying pipe, a support seat, a roasting cylinder, a conveying pipe, a water washing box, a drying storage box, a box door, a control button, a feeding pipe, a first 1. Motor, gas storage tank, crushing roller, vibrating sieve plate, baffle plate, magnetic separation cylinder, scraper, iron-containing waste slag storage bin, waste bin, roasting drum, spiral blade, transmission rack, flame spray pipe, nozzle, Vibrating drying plate, transmission box, second motor, water pump, washing drum, cleaning liquid, grading storage bin, grading screening plate, feeding bin, washing net, electromagnetic plate, smooth sleeve and screen, the base A crushing box is installed on one side of the top of the crushing box, a feeding pipe is arranged on the top of the crushing box, a control button is installed on one side of the outer wall of the crushing box, and a box door is connected to the bottom of the control button through a hinge. The processing equipment has the advantages of convenient waste residue screening, uniform waste residue roasting and graded screening storage.

The invention relates to the field of granulation of a batch used for glass melting, and discloses methods of glass batch granulation and glass production, a method of producing glass by utilizing fly ash and / or fly ash aluminum-extraction slag and a glass product. The method of granulation includes (1) mixing a silicic acid precipitate, a sodium oxide source, a calcium oxide source and a water phase to form slurry; and (2) roasting the slurry under stirring to subject the silicic acid precipitate, the sodium oxide source and the calcium oxide source in the slurry to drying, pre-decomposition and granulation under the roasting condition to obtain glass batch granules. Glass batch granulation in a non-compression manner is achieved, and pre-decomposition and granulation of the glass batch can be completed simultaneously, thus simplifying a glass melting process, and increasing the melting amount of a glass kiln. Obtained molded glass has reduced air bubbles and improved quality.

The invention discloses a complete roasting process for energy-saving regenerated lithium iron phosphate, which belongs to the technical field of new energy. A complete roasting process for energy-saving regenerated lithium iron phosphate comprises the following steps: dismantling waste lithium batteries, ball milling positive electrode materials, Raw material powder mixing, mixing and dehydration, roasting and melt impregnation, dry grinding is expected, the obtained lithium iron phosphate is expected to be put into the mill, and dry grinding is carried out for a certain period of time to obtain lithium iron phosphate material, which can realize the utilization of carbon-based Glucose coats the lithium iron phosphate material with carbon, increases the diffusion coefficient of lithium ions between the two phases, increases the discharge capacity of the lithium iron phosphate cathode material, thereby improving the quality of the recovered lithium iron phosphate material, and at the same time through its own special The structure collects the protective gas during the roasting process, so that the protective gas during the roasting process of lithium iron phosphate can be recycled, and the cost consumption of regeneration and recovery of lithium iron phosphate is reduced.

A rack for cooking poultry or other meat comprises a collapsible frame made from a plurality of rod like members including a cradle within which an elongated skewer is non-rotatably retained such that said skewer may be separable and removable from said rack to turn or plate the poultry.

The invention discloses a production method of high-magnesium pellets. The specific steps are as follows: mix magnesium oxide powder into bentonite to make magnesia bentonite, mix magnesia bentonite into iron concentrate powder, and then add magnesia bentonite Bentonite is used as a mixture; the mixture is mixed with a mixer and transported to the pelletizing disc in the pelletizing chamber through a belt, and the above-mentioned mixture and water are added to the disc pelletizer to form pellets to obtain raw pellets; After the green balls are screened, dried, preheated, roasted and cooled, high-magnesium pellets are obtained. In the present invention, since bentonite and magnesium oxide powder are mixed and ground first, the affinity between bentonite and fine iron powder has been improved, which is beneficial to the roasting of green balls, and effectively improves the powder, poor atmosphere and cooling during the roasting process. In a bad situation, the output is not affected, the production process is easy to control, and the ringing of the rotary kiln is delayed, the production of high-magnesium pellets is normalized, and the quality index meets the index requirements of the steel plant.

The invention discloses a preparation method based on high-pressure roll-grinding pretreatment and used for low-energy-consumption and high-quality vanadium-titanium pellet ores. According to the method, the specific surface area and the particle size composition of vanadium-titanium magnetite are improved by controlling the conditions of high-pressure roll-grinding, and meanwhile, the compact structure of vanadium-titanium magnetite particles are broken by virtue of the high-pressure roll-grinding, so that favorable conditions are provided for pelletization and oxidation-solidification for the vanadium-titanium magnetite; pelletization and roasting methods suitable for the vanadium-titanium magnetite subjected to the high-pressure roll-grinding are developed according to the structure andsurface characteristics of the vanadium-titanium magnetite subjected to the high-pressure roll-grinding; and uniform oxidation and efficient solidification for the vanadium-titanium magnetite are realized through the coupling action of the high-pressure roll-grinding pretreatment, pellet particle size control, thermal process optimization and the like, so that the strength of the vanadium-titanium ore pellets is greatly increased, the energy consumption of the roasting process is reduced, and then the high-quality vanadium-titanium pellet ores are prepared.