50results about How to "Improve final product quality" patented technology

The present invention discloses a kind of wet zinc smelting process, which includes four main technological steps of neutral leaching, low temperature pre-neutralizing, high temperature high acid concentration leaching, and low pollution vanadium settling and iron removing. Before low pollution vanadium settling and iron removing, the high temperature high acid concentration leaching step has iron leached at most, and the solution composition is regulated in the low temperature pre-neutralizing step for satisfactory iron removing effect during vanadium settling without need of adding neutralizing agent. The technological process is suitable for treating complicated zinc concentrate, and has raised metal recovering rate, strengthened impurity removing capacity, raised ultimate product quality, lowered material and power consumption and reduced pollution.

The invention relates to a die box component for reducing the drawing diameter of a metal wire on a water tank wire drawing machine. The die box component comprises a die holder, a die sleeve, a joint bearing, a wire drawing die, a die pin and a limit screw, wherein the die holder is fixedly arranged on a tank body of the wire drawing machine; the die sleeve is arranged in the die holder through the joint bearing, and is provided with a shaft retainer ring for limiting the axial movement of the die sleeve in the joint bearing; the head end of the die sleeve is provided with a conical wire inlet; the tail end of the die sleeve is provided with a concave cavity; the wire drawing die is arranged in the concave cavity, and is compressed and fixed through the hollow die pin; the outer wall of the tail part of the die sleeve is provided with a limit groove; the tail part of the die holder is provided with the limit screw; and the inner end of the limit screw is pressed in the limit groove, and is used for limiting the rotation of the die sleeve. The die box component has a skillful, compact and reasonable structure; and the wire drawing die is arranged through the joint bearing, and can be finely adjusted in a certain angle range according to the height of the metal wire, so that the metal wire is prevented from being damaged, the final product quality is improved, and the service life of the die box component is prolonged.

The invention provides a novel low-temperature-dried fermented soybean meal preparation method comprising the steps that: prepared bacillus broth, lactobacillus broth, and yeast broth are added into soybean meal and honey according to a certain ratio; water is added, and the mixture is well mixed, such that a wet soybean mixture is prepared; the prepared wet soybean mixture is delivered into a fermentation tank, wherein a temperature in the fermentation tank is controlled at 20-24 DEG C; fermentation is stopped after 3-5 days of fermentation, such that a fermented soybean wet material is prepared; the prepared fermented soybean wet material is subjected to in-situ bake-drying under a temperature of 50-70 DEG C in the same fermentation tank; the dried material is delivered from the bottom of the fermentation tank, and is crushed, such that the novel low-temperature-dried fermented soybean meal provided by the invention is obtained. With the method provided by the invention, labor efficiency is improved, and heat-sensitive substances and active probiotics with good biological characteristics in the fermented soybean meal are preserved to a maximal extent. Therefore, the quality of a finished product is greatly improved, and feeding performance and nutritional value of fermented soybean meal are greatly improved.