Abstract: The present disclosure relates to the technical field of mineral powder processing, and provides a mineral powder pellet drying device, the device includes a drying box body and a material preparation trough, and shunting buffer assemblies are configured to withstand the impact of falling mineral powder pellets in an elastically concave mode and guide the mineral powder pellets to two sides for dispersion. The device in the present disclosure has a simple structure, and is capable of buffering the impact strength of the falling mineral powder pellets, so that the breakage of the mineral powder pellets caused by a fast falling speed is avoided, therefore, the device in the present disclosure has a better drying effect and is highly applicable.

Abstract: Disclosed is a stereophotogrammetric method based on binocular vision, including the following steps: image acquisition, image correction and stereo matching are performed; cost matching and cost aggregation are performed on images of different sizes after correction; image segmentation is performed on the corrected image to determine edge pixel points of the object to be measured; and a pixel distance at an edge of the object to be measured is calculated to measure the size of the object. The method of the present invention enhances the matching accuracy of contour pixels of the object to be measured and improves the measurement accuracy.

Abstract: The present invention discloses additive for reducing the roasting temperature of fluxed magnetite pellets and a method of using it, consisting of components: B2O3, Mn2O3, the B2O3 and Mn2O3 are pure chemical reagents, the mass of the additive is 0.8%, 4% of the dry basis mass of the magnetite concentrate, respectively, the magnetite concentrate, bentonite clay, calcium flux and additives will be dosed with 12-14% water of the dry base mass ratio of the mixture, prepared into green pellets of 10-12.5 mm in diameter in a disc ball making machine, After the pellets are completely dried, preheat them for 15˜20 min at 600˜1000° C. to ensure that Mn2O3 is fully decomposed, then roasting is carried out for 15 min at 1200° C., and after roasting, the pellets are cooled to room temperature to obtain the finished pellets.

Abstract: The present invention discloses additive for reducing the roasting temperature of fluxed magnetite pellets and a method of using it, consisting of components: B2O3, Mn2O3, the B2O3 and Mn2O3 are pure chemical reagents, the mass of the additive is 0.8%, 4% of the dry basis mass of the magnetite concentrate, respectively, the magnetite concentrate, bentonite clay, calcium flux and additives will be dosed with 12-14% water of the dry base mass ratio of the mixture, prepared into green pellets of 10-12.5 mm in diameter in a disc ball making machine. After the pellets are completely dried, preheat them for 15˜20 min at 600˜1000 ° C. to ensure that Mn2O3 is fully decomposed, then roasting is carried out for 15 min at 1200 ° C., and after roasting, the pellets are cooled to room temperature to obtain the finished pellets.