The invention provides a closed type
calcium carbide furnace charging
nozzle and a process for producing the same. The charging
nozzle mainly comprises two groups of seamless external casings, seamless internal casings, water inlet pipes, water outlet pipes, communication pipes and bottom edge embedded flanges; the seamless internal casings are arranged in the seamless external casings; the bottom edge embedded flanges, the water inlet pipes and the water outlet pipes are arranged on the two groups of the seamless external casings respectively; and the two groups of seamless external casings are communicated with the communication pipes. The charging
nozzle has the advantages of solving the problems of
water leakage due to frequent breakage and frequent shut-down of the furnace for exchange, meeting the requirements on the charging production of a closed type
calcium carbide furnace, effectively improving quality structure of material
layers around electrodes, greatly improving furnace conditions (avoiding piling of materials on the outer side of the charging nozzle), making the materials keep a
steamed bread-
shaped charge surface around the electrodes, further effectively reducing thermal loss, alleviating the insufficiency of the materials in the
central region of the furnace, reducing the temperature of the charge surface, reducing exposing areas of the electrodes, reducing the thermal loss of
electrode resistances, improving the quality structure of the material
layers, contributing to improving the pre-heating of the furnace materials and forming a big
crucible region, ensuring good furnace conditions, avoiding frequent occurrence of material
stamping and material throwing, and further facilitating the technical operation and control of the furnace and high yield, high quality and low
energy consumption of the furnace.