5 results about "Bullion" patented technology

1. The name of the design product: packaging box (panda coin). 2. The use of the design product: used for storing panda gold and silver coins. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 5. 5. The left view is omitted as it is embodied in the submitted views; the right view is omitted as it is embodied in the submitted views; the top view is omitted as it is embodied in the submitted views; the bottom view is omitted as it is embodied in the submitted views.

The present application belongs to the technical field of crude lead refining, and particularly relates to a process for expanding the contact interface of crude lead refining slag and gold and efficiently separating the refining slag, which comprises the following steps: step 1, heating crude lead to a molten state in a refining kettle and keeping constant temperature; step 2, adding a refining agent into the refining kettle, and the refining agent covers the surface of the lead liquid; step 3, immersing a supergravity composite stirring multifunctional device below the lead liquid surface and starting rotation, the lead liquid and the refining agent enter from the upper opening of the device, are dispersed in the device through stirring, the refining slag is generated and enriched on the inner wall of the device, and the lead liquid flows out from the lower opening gap of the device and returns to the refining kettle. The present application introduces the supergravity composite stirring separation into the refining process, significantly expands the contact area of the slag and gold, improves the efficiency of the impurity removal reaction, realizes the efficient separation of the refining slag and the lead liquid, the removal rate of the refining slag is more than 99.9%, the refining time is shortened, and the amount of the refining agent is reduced, which is superior to the existing refining process level.

The application discloses a method for preparing low-oxygen-content high-purity gold from regenerated crude gold, which comprises the following steps: (1) adding hydrochloric acid into the regenerated crude gold and blowing air into the regenerated crude gold to pre-leach impurities under certain conditions; (2) dissolving, diluting and filtering the gold material after pre-leaching of impurities by using hydrochloric acid and chlorine gas to obtain a chloroauric acid solution; (3) adding appropriate ferric chloride into the chloroauric acid solution, adjusting the pH value by using sodium hydroxide solution, standing, filtering and obtaining a pure gold solution; (4) reducing the gold solution after impurity removal by adding hydrogen peroxide solution, filtering and washing to obtain sponge gold; and (5) refining and deoxidizing the sponge gold in a smelting and refining device, and obtaining low-oxygen-content high-purity gold after cooling. The method has the advantages of simple technological process, good impurity removal effect and easy control of the reaction process, and the high-purity gold prepared by the method has a purity of greater than 99.999% and an oxygen content of not more than 1 ppm.

The invention discloses a treatment method of lead-arsenic-containing solid waste, which realizes efficient directional fixation of arsenic in arsenic-containing smelting waste (fixation rate gt; 95%) and the synchronous high-grade recovery of valuable metals (the purity of lead bullion is gt; the lead recovery rate is 93.11%, and the lead recovery rate is 98.7%. The invention discloses a double action mechanism of chemical stirring effect and viscosity effect of coke in a system, and solves the technical problem that high metal recovery rate is inevitably accompanied by high pollution risk in the traditional technology through accurate control of a coke addition amount window. According to the method, complex pretreatment such as pre-roasting is not needed, all-component resource utilization of the multi-source arsenic-containing waste can be achieved through a one-step method, the generated iron-rich sulfonium phase can serve as a weighting material to be sold, lead bullion can directly enter the refining procedure, the ton treatment cost is remarkably reduced, and technical support is provided for green and sustainable development of the non-ferrous metal smelting industry.

1. Name of the designed product: Commemorative coin (Jiyan flower gold and silver coin set). 2. Use of the designed product: commemorative coin for collection and appreciation. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo that best shows the design points: design 1 front view. 5. The right view of the designed product is the same as the left view, and the right view is omitted; the top view is symmetrical with the left view, and the top view is omitted; the bottom view is symmetrical with the left view, and the bottom view is omitted. 6. Design 1 is designated as the basic design.