33results about How to "Achieve direct separation" patented technology

The present invention relates to a continuous process method for preparing hydroquinone. The method comprises the following steps: (1) adding a sodium nitrite aqueous solution to a sulfuric acid solution of para-aminophenol in a dropwise manner to carry out a diazotization reaction to obtain a dark brown diazo solution; (2) continuously feeding methyl isobutyl ketone from the bottom, continuously feeding a copper sulfate solution from the middle part, collecting extraction residue water from the bottom, collecting an extraction oil layer from the upper overflow port, adjusting flow and in-out balance, and then continuously feeding a diazo solution from the middle part, wherein the extraction oil layer is subjected to precipitation, decoking and crystallization to obtain the hydroquinone finished product.

The invention belongs to the technical field of rare earth recovery, and in particular relates to a method for recovering rare earth from an asymmetrical capacitive nickel-hydrogen battery. The method is to disassemble the asymmetric capacitive nickel-metal hydride battery to obtain the negative electrode material, dissolve it in the hypochlorous acid solution after being broken, let it stand, add sulfuric acid solution, leaching, and filtering to obtain the leaching solution and filter cake; adding solid hydroxide to the leaching solution Sodium, control the pH value, produce precipitation, filter to obtain the rare earth sulfate double salt precipitation and filtrate, adjust the concentration of sulfuric acid in the filtrate, and then return the filtrate to the leaching process for recycling. The invention has good separation effect of rare earth and other metals, high recovery rate of rare earth, simple process, low cost, convenient operation and low energy consumption.

The invention discloses a method for recovering valuable metals from an alloy containing iron, cobalt and copper, which comprises the following steps: (1) combining one or more of matte, copper-nickel matte and miscellaneous copper with Fe-cobalt-copper alloy is added into the converter; (2) Control the smelting temperature in the converter to be 1100°C-1350°C, and blow oxygen-containing gas into the converter to make the materials in the converter react under the oxidizing atmosphere, and produce crude Copper, cobalt-containing slag and flue gas; (3) separate blister copper and cobalt-containing slag, and recover cobalt from cobalt-containing slag. The method of the present invention effectively reduces the smelting temperature required for smelting the alloy of iron-cobalt-copper alone by melting the alloy containing iron-cobalt-copper with a high melting point and the matte / copper-nickel matte with a low melting point. The advantages of energy consumption are very prominent, and the requirements for refractory materials are reduced, the economic benefits of the process are improved, the amount of slagging agent is small, and it is more economical and environmentally friendly.

The invention relates to the field of transferring tools, in particular to a transferring tool for transferring object self separation. The transferring tool comprises a transferring tool body and a transferring object bearing table; a transferring head is arranged at the front end of the transferring tool body, and a conveying roller is further arranged insides; one end of a transferring object is wound on the conveying roller, a separator is arranged between the conveying roller and the transferring head, the transferring object is separated through the separator into two parts including a belt body and belt paste, and the other end of the belt body is wound on the transferring head; and the transferring object bearing table is arranged below the transferring tool body, a containing space is formed between the transferring tool body and the transferring object bearing table, the transferring object is contained in the containing space, and a guide part is arranged at the front portion of the transferring object bearing table. By means of the transferring tool, direct separation of the belt body and the belt paste of the transferring object can be achieved before rotary printing, contact fixation between the transferring object and the transferring object can be well achieved, and the transferring effect is good.

The invention relates to a fine processing method for impurities in building waste soil. The fine processing method comprises the following steps of forming mixed slurry: processing the building wastesoil by adopting a sludge dreg treatment device, and forming mixed slurry comprising substances such as gravel, soil, grass wood chips and water; performing stirring and processing, wherein the mixedslurry is stirred and processed in a stirring tank, so that the gravel, the soil and the grass wood chips are separated from each other; performing depositing and processing, wherein the mixed slurrystands in a transition pool and is subjected to settling and layering, and the weeding wood chips are preliminarily removed; performing inflating treatment, wherein inflation treatment is carried outon the mixed slurry with the weeding wood chips preliminarily removed in an inflation tank, the and weeding wood chips are further removed; and performing recycling, wherein the mixed slurry obtainedafter two-stage removal of the weeding wood chips are separated to obtain mud slurry and gravel, and the collected grass wood chips are recovered and utilized. By means of the fine processing method,the building waste soil can be used for producing high-quality building raw materials, and the grass wood chips can be effectively recovered.