2 results about "High oxygen" patented technology

The invention discloses a vacuum induction melting method of high-oxygen-content steel, which comprises the following steps: using iron scales or iron ores as an oxygen supply source, charging oxygen gas and argon gas into the furnace, regulating the gas pressure in the furnace, and reasonably optimizing the addition sequence of the iron scales, alloy and graphitic carbon, thereby ensuring the high oxygen content. The invention solves the problem of contradiction between high vacuum degree and high oxygen content, greatly enhances the oxygen content in molten steel, and provides technical guarantees for melting high-oxygen-content steel grades in vacuum.

The invention relates to the technical field of sewage treatment, and especially relates to a strong positive pressure spray aeration system. The system comprises an aeration tank having a hollow structure, nozzles, a water pump and an oxygen generator, the liquid phase inlets of the nozzles are communicated with the water outlet of the water pump through water inlet tubes, and the water inlet ofthe water pump is communicated with an aerobic tank; the water outlet of the nozzle is communicated with the inner chamber of the aeration tank, and the inner chamber of the aeration tank is formed byan upper atomization area and a lower high-oxygen water area; the outlet of the oxygen generator is communicated with the atomization zone; and a return tube is arranged at the lower part the sidewall of the aeration tank, one end of the return tube is communicated with the high-oxygen water area, and the other end of the return tube is communicated with the lower part of the sidewall of the aerobic tank. The strong positive pressure spray aeration system has the advantages of simple and complete structure, low price, wide aeration range, and uniform and rapid distribution of dissolved oxygen.