3results about How to "Improve roasting efficiency" patented technology

This invention provides a microwave roasting equipment and process flow for iron extraction from red mud, relating to the field of red mud iron extraction technology. It includes a fixed base frame with a rotary kiln mounted on top. The rotary kiln comprises a furnace shell, furnace tubes, a discharge end pipe, a feeding assembly, a preheating assembly, a retention assembly, and a drive assembly. By incorporating the preheating and retention assemblies, this invention achieves effective preheating of the red mud particles, reducing the energy consumption required for roasting. Simultaneously, the retention assembly ensures uniform microwave action on the red mud particles, effectively improving the heating and roasting efficiency. The combined effect significantly reduces energy consumption during red mud roasting, and through this novel red mud iron extraction process, the iron grade of the obtained iron concentrate is greatly improved.

A pressurized fluidized bed roasting system is disclosed, comprising a fluidized bed furnace tube and a pressurized roasting device. The fluidized bed furnace tube has a first fluidized gas inlet at its lower end and a first fluidized gas outlet at its upper end. The pressurized roasting device is arranged parallel to the fluidized bed furnace tube, and an opening communicating with the inner cavity of the pressurized roasting device is formed on the inner wall of the fluidized bed furnace tube, with a movable baffle at the opening. The pressurized roasting device has a second fluidized gas inlet at its lower end and a second fluidized gas outlet at its upper end. The pressurization method of the pressurized roasting device is to increase the gas flow rate or change the device volume. This pressurized fluidized bed roasting system provides preheating of materials in the fluidized bed furnace tube before feeding them into the pressurized roasting tube for pressurized roasting, shortening the roasting time, improving roasting efficiency and resource utilization, and solving the problem of long roasting times in conventional fluidized bed roasting processes.

This application discloses a molecular sieve calcination furnace, relating to the field of calcination furnaces. The furnace includes a furnace body with a furnace door hinged to one side. An exhaust pipe and an inlet pipe are respectively fixed through the middle of both ends of the furnace body's outer wall. A feed pipe is fixed through the top of the furnace body. A servo motor is fixed to the top of the furnace body's outer wall, and a drive gear is fixed to the power output end of the servo motor. This device adjusts the position of the baffle according to the required size of the finished molecular sieve. By rotating the baffle at the bottom of the permeable mesh, the common gap between the first and second material leakage holes is adjusted. The servo motor is then activated, causing the first and second driven shafts to rotate in opposite directions. This drives each set of crushing rods to crush molecular sieves of different sizes at the top of each partition. The crushed molecular sieves then move downwards, thereby achieving the effect of crushing large-volume molecular sieves, improving calcination efficiency, and controlling the size of the molecular sieves after calcination.