Method for preparing nanometer ferric oxide iron oxide red by using industrial titanium concentrate as raw materials
A nano-iron trioxide, titanium concentrate technology, applied in the direction of iron oxide/iron hydroxide, iron oxide, nanotechnology, etc., can solve the problem of high calcination temperature, morphology, structure, particle size and composition of iron red products. There are related descriptions and other problems to achieve the effect of low preparation cost, easy mass production, and stable production process
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Embodiment 1
[0033] see figure 1 The process flow shown is a mesoscale preparation of high-quality nano-Fe with industrial titanium concentrate as raw material. 2 o 3 Iron red method, first use dilute acid to impregnate the iron element in the industrial titanium concentrate in the form of ferrous iron and ferric iron, the leaching solution is dispersed by in-situ surfactant, and the precipitant is precipitated to obtain the precursor. / Gas three-phase hydrothermal reaction system chemical reaction process and precursor mesoscale structure control, through hydrothermal reaction (temperature 180-220 ℃, time 1-3h), to obtain high-quality nano-Fe 2 o 3 Iron Red products. Concrete preparation process is as follows:
[0034] Configure 22% dilute hydrochloric acid solution, add 100g of industrial titanium concentrate under the condition of mechanical stirring at 900 rpm, the mass ratio of industrial titanium concentrate and dilute hydrochloric acid is 1:5, fully stir for 24h, and the turbid ...
Embodiment 2
[0048] Configure 20% dilute hydrochloric acid solution, add 100g of industrial titanium concentrate under the condition of mechanical stirring at 900 rpm, the mass ratio of industrial titanium concentrate and dilute hydrochloric acid is 1:5, fully stir for 24h, and the turbid solution obtained after the reaction is passed through Filter to obtain clarified leaching solution and residue, then add 5mL cetyltrimethylammonium bromide (0.02M) to 500mL leaching solution successively, continue stirring for 0.5h, then slowly add 2800mL sodium hydroxide solution (1M) to the solution Most of the iron ions are precipitated, and the obtained precipitate is the iron red precursor. The obtained precursor was transferred to a hydrothermal device and reacted at a temperature of 210°C for 2 hours to obtain a brick-red precipitate, which was filtered, washed and dried to obtain nano-Fe 2 o 3 Iron Red products. The synthetic iron red product is bright in color, and its color and tone are almos...
Embodiment 3
[0052] Configure 25% dilute hydrochloric acid solution, add 100g of industrial titanium concentrate under the condition of mechanical stirring at 900 rpm, the mass ratio of industrial titanium concentrate and dilute hydrochloric acid is 1:5, fully stir for 24h, and the turbid solution obtained after the reaction is passed through Filter to obtain clarified leaching solution and residue, then add 5mL cetyltrimethylammonium bromide (0.02M) to 500mL leaching solution successively, continue stirring for 0.5h, then slowly add 2800mL sodium hydroxide solution (1M) to the solution Most of the iron ions are precipitated, and the obtained precipitate is the iron red precursor. The obtained precursor was transferred to a hydrothermal device and reacted at a temperature of 210°C for 2 hours to obtain a brick-red precipitate, which was filtered, washed and dried to obtain nano-Fe 2 o 3 Iron Red products. The synthetic iron red product is bright in color, and its color and tone are almos...
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