4 results about "Antimony pentaoxide" patented technology

The invention discloses an antimony electrolyte impurity removal adsorbent as well as a preparation method and application thereof, and relates to the technical field of antimony electrolyte purification. The preparation method comprises the following steps: mixing antimony pentoxide and deionized water according to a certain proportion, preparing a slurry at a certain temperature and within a certain reaction time, or further modifying antimony pentoxide by using one or a mixed solution of concentrated sulfuric acid and hydrogen peroxide, and filtering and drying the mixed slurry to obtain the novel active polyhydroxy antimonic acid. During application, the novel active polyhydroxy antimonic acid adsorbent is added into electrolyte according to the proportion of 500-5000 times of the total mass of lead, bismuth and arsenic, reaction is performed for 1-6 hours under the conditions of 30-90 DEG C and 200-550 r / min, and deep purification can be realized after standing, settling and separating. The method is short in technological process, mild in condition, easy to operate, environmentally friendly and high in lead, bismuth and arsenic removal rate, purified liquid can return to an electrolysis system, the saturated adsorbent can be regenerated and reused, and the method has good economic benefits and application prospects.

The present application relates to the field of nonferrous metallurgy, and provides a method for preparing high-quality sodium pyroantimonate by pre-oxidation and double decomposition, comprising the following steps: under the assistance of ultrasonic waves, adding antimony oxide and hydrogen peroxide into a dilute nitric acid solution at 50-80 DEG C to react, carrying out liquid-solid separation, washing, and drying to obtain a powdered antimony pentoxide product; slurryzing the antimony pentoxide product with a potassium hydroxide solution, then adding the obtained slurry into a high-pressure reaction kettle, stirring and reacting under high temperature and high pressure, carrying out liquid-solid separation after cooling to obtain a potassium pyroantimonate solution; adding sodium hydroxide into the potassium pyroantimonate solution after heating to 70-90 DEG C, carrying out a double decomposition reaction, carrying out liquid-solid separation, and drying to obtain a sodium pyroantimonate product. The essence of the present application is to achieve the purpose of deeply removing impurities through the two processes of acidic oxidation and pressure dissolution, and to prepare a high-quality sodium pyroantimonate product by using a double decomposition reaction. The present application has the advantages of good quality of the sodium pyroantimonate product, good filtration performance, and stable technical indexes.

A carrier for electrophotographic image formation includes carrier particles. Each of the carrier particles includes a core particle and a coating layer covering the core particle. The coating layer includes diantimony pentoxide-containing particles.

The invention discloses hydrophobic flame-retardant antimony pentoxide hydrosol and a preparation process of dry powder of the hydrophobic flame-retardant antimony pentoxide hydrosol, and relates to the technical field of antimony pentoxide processing. The invention discloses a preparation process of hydrophobic flame-retardant antimony pentoxide hydrosol, which comprises the following steps: blending antimony trioxide and water, and adding a compound stabilizer for dispersion reaction to obtain a mixture; heating the mixture to a reflux state, dropwise adding a hydrogen peroxide solution, and carrying out reflux oxidation reaction to obtain hydrophobic flame-retardant antimony pentoxide hydrosol; the compound stabilizer is prepared from 1-hydroxyethylidene-1, 1-diphosphonic acid, a charge control agent and gamma-methacryloxypropyltrimethoxysilane. The prepared composite stabilizer is added into the preparation process of the hydrophobic flame-retardant antimony pentoxide hydrosol, and the prepared hydrophobic flame-retardant antimony pentoxide hydrosol has the characteristic of good hydrophobic flame-retardant performance.