36results about How to "Less investment in facilities" patented technology

The invention relates to the technical field of starch wastewater treatment, and particularly relates to a treatment process for potato starch production wastewater. Starch extraction wastewater is pretreated by addition of an acidity regulator, flocculation lumps are formed; and a part of the flocculation lumps is precipitated at the bottom of a flow tank during flowing; the wastewater is naturally placed in a wastewater collection tank for more than 120 days, and then enters a wastewater filter tank for performing filtration treatment; a flocculant is added, precipitation is performed for 2-3 hours after stirring; and the wastewater after flocculation treatment enters an anaerobic system and an aerobic biochemical system in order to further purify the water quality to meet a discharge standard. Objects of the potato starch wastewater treatment process are to solve the problem of wastewater treatment in small and medium-sized potato starch, and to solve the problems of large investment, long start-up period, waste of waste water resources, non-standardized water discharge and high operation cost of sewage treatment equipment in a wastewater treatment process.

The invention relates to a process for producing white matte by mixed smelting of scrap copper and copper concentrate. Based on the traditional matte smelting process, the materials are mixed according to the mass ratio of the copper content of copper concentrate and scrap copper of 1:0.5-0.25, and the scrap copper is continuously added into a melting furnace; and coal the amount of which is 2% to 9% of the amount of the copper concentrate is added, and the white matte is produced by smelting in oxygen-enriched air with the volume concentration of 60% to 95%. The process of the invention has the advantages of low investment, low energy consumption, simple implementation, convenient operation, energy saving, environmental protection and the like, can effectively treat scrap copper, produces white matte, can reduce the copper content in slag, and overcomes the shortcomings that the copper content in the slag is high in the traditional high-grade matte smelting method.

The invention discloses a rapid dehydration system for iron concentrate powder, which belongs to the technical field of mineral processing in the metallurgical industry. The dehydration system of the present invention includes a sedimentation tank, a filter device, a high-pressure air blowing device, an air blowing pipe and a solar heating device, wherein: the sedimentation tank includes a pulp inlet, a pulp spacer, a sedimentation tank discharge port and a slope bottom of the sedimentation tank The ore pulp inlet is opened on one side of the top of the sedimentation tank, and the ore discharge port of the sedimentation tank is opened at the bottom of the other side wall of the sedimentation tank; the pulp spacer is set inside the discharge port of the sedimentation tank; There is a slope bottom of the sedimentation tank with high inclination on the left and low inclination on the right, and the inclination slope is 1 to 3%; the filter device is installed on the inner side of the pulp spacer; the high-pressure air blowing device blows air to the iron concentrate powder in the sedimentation tank through the air blowing pipe; the solar energy The heating device is set on the top of the sedimentation tank. The invention realizes the purpose of rapid dehydration of iron ore concentrate powder in a sedimentation tank in a small and medium-sized iron ore dressing plant with low investment and low water content in the final product.

The present invention is an energy-saving and environment-friendly oven with discharge plasma assisted combustion, which comprises an insulating shell and a charcoal chamber. A high-voltage electrode is provided on the side, and a chute is provided between the lifting control device and the insulating shell; the high-voltage electrode inside the charcoal chamber is connected to the control device through a high-voltage wire; the carbon dioxide absorption and fire extinguishing device is connected to the gas inlet and outlet holes. catch. Adjust the voltage to control the charcoal flame, and make the charcoal fully burn in oxygen-poor areas and absorb carbon dioxide; make full use of electric energy, make the fire even, realize smokeless barbecue, make the food rich in active substances, and taste better; and less pollutants emissions, safe and reliable.

The invention provides a chemical nickel wastewater treatment agent which comprises 70-90 wt% of alkaline matter and 10-30 wt% of oxidizer. The chemical nickel wastewater treatment agent is characterized in that the alkaline matter is one or more of NaOH, Na2CO3 and CaO; and the oxidizer is H2O2 or / and Na2S2. The agent is used for treating chemical nickel wastewater and implementing complete and thorough settling of nickel ions and phosphorus; and the water quality completely satisfies the discharge standard in Table 3 in GB21900-2008 Electroplating Pollutant Discharge Standard.

The invention discloses an iron concentrate powder high-speed dehydration method in a settling pond and belongs to the technical field of metallurgical industry beneficiation. According to the method, multiple rectangular concrete settling ponds with inclined slope bottoms are constructed, an air compressor blowing device is arranged, the tail ends of blowing pipes which are connected into an air compressor are inserted into the pond from the upper end to the lower end of the settling pond for conducting 'compressing and blowing', the extra moisture in the pond is floated out of the surface of the settling pond along with air flow in the pond, standing is conducted for a while, after the clean water on the surface of the pond is drained completely, the moisture content of the iron concentrate powder in the pond can reach 10%, and materials can be discharged. By the utilization of the theories that the iron concentrate powder is not large in density and not prone to absorbing water, the moisture absorbed on the surface of the iron concentrate powder is much and irregular in shape, so that a gap is large and an air flow channel is formed, and therefore the moisture on the surface of the iron concentrate powder is easy to blow out. By means of the method, the high-speed dehydration of the iron concentrate powder in the settling pond of small and medium sized iron ore mine dressing plants can be achieved, the investment is little, and the moisture content is low in a final product.