Program testing system and method

Intelligent food packaging bag sealing equipment

The intelligent food packaging bag sealing equipment comprises a machine body (101), a linear motor (110), an electric heating plate (102), a placing plate (103), a packaging bag (104), a pressing plate (105) and a sealing mechanism (200). The electric heating plate (102) is driven by the linear motor (110) to heat the packaging bag (104) when the electric heating plate (102) moves downwards to conduct heat sealing, the first motor (201) is driven by the sealing mechanism (200) to drive the pressing plate (105) to press one side of the packaging bag (104), the packaging bag (104) can be prevented from moving disorderly in the heating process, and therefore the sealing efficiency is improved, and manual labor is replaced.

Method for extracting indium from alkali oxidation scum rich in indium

The invention relates to a method for extracting indium from alkali oxidation scum rich in the indium. Crude indium is obtained through the following working procedures of: (1) washing the alkali oxidation scum rich in the indium by using water; (2) washing by using water and leaching; (3) washing leached scum by using water; (4) displacing aluminum in leaching liquor; (5) briquetting indium sponges; (6) smelting briquetted alkali; and (7) removing cadmium and thallium in the smelting material. In the method, a solvent consisting of sulfuric acid and chlorides is used for leaching the alkali oxidation scum rich in the indium at a time, and the leaching rate of the indium can reach higher than 99.5 percent. Compared with traditional secondary dilute sulfuric acid counter current leaching, the method has the advantages of short process flow, high leaching speed, low reaction temperature, simple operation, low content of leaching liquid impurities, high indium leaching rate, and the likeand ...

Meat processing equipment

The meat processing equipment comprises a bottom plate (101), a steel wire saw blade (103), a moving platform (313) and a rotating mechanism (300), and the rotating mechanism (300) drives a telescopic mechanism through a motor (201) to achieve left-right movement of the moving platform (313), so that the moving platform (313) drives meat on the moving platform (313) to move relative to the steel wire saw blade (103). Therefore, the saw cutting of meat by the steel wire saw blade (103) is realized.

Method for recovering gold, silver, bismuth, stibium and copper from lead anode mud

The invention relates to a method for recovering gold, silver, bismuth, stibium and copper from lead anode mud. The method is carried out through the following working procedures of: (1) leaching by using hydrochloric acid; (2) smelting leached residues; (3) electrolyzing silver; (4) chloridizing to extract gold; (5) precipitating the silver by using sodium sulfide; (6) hydrolyzing to precipitate the stibium; (7) neutralizing to precipitate the bismuth; and (8) displacing copper by using iron. In the invention, through the steps of pre-oxidizing before wet-process leaching of the lead anode mud, leaching by using hydrochloric acid at normal temperature, precipitating the silver by using the sodium sulfide, hydrolyzing to precipitate the stibium, neutralizing to precipitate the bismuth, displacing to precipitate the copper, smelting the leached residues, electrolyzing the silver and chloridizing to extract the gold, the purpose of comprehensively extracting the valuable metals of the gold ...

Method for extracting indium from alkali oxidation scum rich in indium

The invention relates to a method for extracting indium from alkali oxidation scum rich in the indium. Crude indium is obtained through the following working procedures of: (1) washing the alkali oxidation scum rich in the indium by using water; (2) washing by using water and leaching; (3) washing leached scum by using water; (4) displacing aluminum in leaching liquor; (5) briquetting indium sponges; (6) smelting briquetted alkali; and (7) removing cadmium and thallium in the smelting material. In the method, a solvent consisting of sulfuric acid and chlorides is used for leaching the alkali oxidation scum rich in the indium at a time, and the leaching rate of the indium can reach higher than 99.5 percent. Compared with traditional secondary dilute sulfuric acid counter current leaching, the method has the advantages of short process flow, high leaching speed, low reaction temperature, simple operation, low content of leaching liquid impurities, high indium leaching rate, and the like and ...

Method for recovering gold, silver, bismuth, stibium and copper from lead anode mud

The invention relates to a method for recovering gold, silver, bismuth, stibium and copper from lead anode mud. The method is carried out through the following working procedures of: (1) leaching by using hydrochloric acid; (2) smelting leached residues; (3) electrolyzing silver; (4) chloridizing to extract gold; (5) precipitating the silver by using sodium sulfide; (6) hydrolyzing to precipitatethe stibium; (7) neutralizing to precipitate the bismuth; and (8) displacing copper by using iron. In the invention, through the steps of pre-oxidizing before wet-process leaching of the lead anode mud, leaching by using hydrochloric acid at normal temperature, precipitating the silver by using the sodium sulfide, hydrolyzing to precipitate the stibium, neutralizing to precipitate the bismuth, displacing to precipitate the copper, smelting the leached residues, electrolyzing the silver and chloridizing to extract the gold, the purpose of comprehensively extracting the valuable metals of the gold ...

Progressive rubber and plastic chipper

The invention relates to a progressive rubber and plastic chipper. The chipper is characterized in that: two crushing chambers are respectively arranged up and down; both sides of cutter shafts in each crushing chamber are provided with circular baffles, wherein the circular baffles synchronously rotate with the cutter shafts; the number of the cutters in the primary crushing chamber is less than the number of the cutters in the secondary crushing chamber; the other side of the primary crushing chamber is not provided with a fixed cutter; the primary crushing chamber is mainly provided for cutting and breaking; the secondary crushing chamber is provided for further cutting the breaked materials from the primary crushing chamber into pieces; the cutter shafts in the primary crushing chamber and the secondary crushing chamber form engagement transmissions through driving gears arranged on the two cutter shafts. The chipper provided by the present invention has advantages of reasonable structure ...

Briquetting coke for lead-zinc smelting and preparation method thereof

The invention discloses briquetting coke for lead-zinc smelting and a preparation method of the briquetting coke, and relates to the technical field of coke for smelting. The preparation method provided by the invention is low in raw material cost, the used equipment is common equipment of a smelting plant, the process flow can be completed without large-scale technical transformation, the operation steps are simple, the equipment utilization rate is high, the content of zinc and lead in the front bed slag of the closed blast furnace generated by smelting the product obtained by the preparation method is within the range of 8-9%, and the production cost is low. The effect is the same as the original coke use effect; the consumption of the pulverized coal used in the treatment process of the slag is basically consistent, which proves that the briquetted coke prepared by the method has the same performance as the original coke and can be equivalently replaced; therefore, when the product ...

Progressive multifunctional pulverizer

The invention provides a progressive multifunctional pulverizer, characterized in that: notched blades are arranged alternately on two shafts in opposite directions of turning, teeth of each blade on the shaft staggers by a certain angle in circumferential direction, blades on the shafts are separated by spacers, the thicknesses of the spacers turn smaller from large to small gradually, the variation trends of the distances between blades are similar with the variation trends of he thicknesses of the spacers, the tooth profiles of the blades slant to one side by an angle and form a spiral structure in axial direction, the two group of blades rotate relatively, materials are subject to extruding and cutting between two blades to obtain a preliminary crush, the spacing between the blades is sized down, materials are transferred by the spirals formed by blades from one end of big spacing between the blades to one end of small spacing between the blades, and the process of materials from the ...

Food processing shaping device

The food processing shaping device comprises a machine body (101), wherein the machine body (101) is fixed with a rack; the compression box (102) is fixedly connected with the machine body (101); the compression plate is mounted in the compression box (102), and the compression plate comprises a first compression plate (103) and a second compression plate (104); and the first compression mechanism (200) drives the connecting rod rack mechanism through a motor (201) to enable the first compression plate (103) and the second compression plate (104) to move. Through the first compression mechanism (200), the motor (201) drives the connecting rod rack mechanism to enable the first compression plate (103) and the second compression plate (104) to move oppositely, so that scattered or large-size food is compressed and deformed, the size is reduced, the shape is changed, loose raw materials are extruded and formed, manual compression is replaced, and the compression efficiency of the food is improved ...

Method for producing selenium-rich chemical fertilizer additive by utilizing selenium-containing acid mud

The invention discloses a method for producing a selenium-rich chemical fertilizer additive by utilizing selenium-containing acid mud, and relates to the technical field of comprehensive utilization of acid mud. The method comprises the following steps: adding calcium into mercury-containing selenic acid mud, roasting to recover mercury, and carrying out slurrying, alkali liquor leaching, pH value adjustment, neutralization and impurity removal, and sodium selenite solution evaporation and concentration on the roasting slag to produce a sodium selenite solution as a selenium-rich chemical fertilizer additive. The method has the characteristics of short process flow, simple equipment, easiness in operation and no environmental pollution.