71results about How to "Increase precipitation speed" patented technology

A molding material mixture for foundry purposes, comprising a mold sand, a sodium hydroxide solution, an alkali-silicate binding agent, and an additive suspension. The molding material mixture contains 0.1 to 10% by weight of sodium hydroxide solution with reference to the weight of the sand, 0.1 to 5% of binding agent with a solid matter percentage of 20 to 70%, and 0.1 to 3% by weight of the additive suspension. The additive suspension comprises 30 to 70% by volume of an amorphous, spherical SiO2 particles, which have a first grain size in the range of 1 to 5 micrometers, and a second grain size in the range of 0.01 to 0.05 micrometers.

The invention discloses a micro-oil ignition swirling pulverized coal burning device for preventing slag formation in a first-class burning chamber, which relates to a swirling pulverized coal burning device for preventing slag formation in a first-class burning chamber, and aims at solving the problems of easy slag formation in the burning chamber during burning and large oil consumption for ignition under low-load stable burning of the existing micro-oil ignition swirling pulverized coal burner. A concentration ring is fixed in a first air channel pipe, a sleeve is fixedly arranged in the concentration ring, the first-class burning chamber and a second-class burning chamber are fixed in the first air channel pipe at the front end of the sleeve, one end of a main oil gun is fixed in the sleeve, a second air channel pipe is fixedly sheathed on the first air channel pipe, an inner swirler is fixed in an inner secondary air channel, a third air channel pipe is fixedly sheathed on the second air channel pipe, an outer swirler is fixed on an outer secondary air channel, the axial distance between the sleeve and the first-class burning chamber is b, a backflow area is generated at the front end of the sleeve, the axial distance between the front border of the backflow area and the mouth of the sleeve is a, and b is more than a. The burning device has the advantages of having no slag formation in the first-class burning chamber during burning and small oil consumption for ignition.

A method of manufacturing an electronic part in which on the upper surface of an insulating member covering lower layer wiring, a conductor portion connected from the lower layer wiring is exposed. In this method, electric power supplying film is formed on the upper surface of the insulating member, whereafter an opening portion having the lower layer wiring as a bottom is formed from the electric power supplying film side. Then metal plating is grown from the edge portion of the electric power supplying film from the opening portion with the electric power supplying film as an electrode, and the opening portion is filled with the metal plating closely contacting with the lower layer wiring to thereby form a conductor portion.

The invention provides an acid etching liquid regenerative cycle method. The method comprises the steps of collection of acid etching liquid, filtration and mixing of the acid etching liquid, ultrasonic-assisted electrolysis, copper sheet decomposition, anolyte cycle using and the like. According to the acid etching liquid regenerative cycle method, ultrasonic catalyzed electrolysis is adopted, the concentration of the acid etching electrolyte, the electrolytic current density and electrolytic temperature are precisely adjusted and controlled, copper ions in the acid etching liquid can be converted to be copper sheets with the purity reaching up to 99%, the separation-out speed of the copper ions is greatly improved, production efficiency is improved, and meanwhile production energy consumption is lowered. The invention further provides an acid etching liquid regenerative cycle system matched with the acid etching liquid regenerative cycle method. The ultrasonic technology is combined with the ion film technology, the copper ion separation-out speed can be increased, the copper ion separation-out purity can be further improved, and the high-purity copper sheets with the purity being 99.8% or above can be obtained.