A carrier material prepared from hazardous chemical waste and its preparation method and use
A carrier material and hazardous waste technology, applied in the field of preparation of the carrier material, can solve the problems of low utilization rate and the like, and achieve the effects of low cost, reasonable design, and good adsorption and permeation effect.
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Embodiment 1
[0043] Example 1, a carrier material prepared from chemical hazardous waste, the carrier material is made of the following raw materials in weight ratio:
[0044] (1) High-salt chemical hazardous waste: 50%; the NaCl content of this high-salt chemical hazardous waste is 95%;
[0045] (2) Clay or gangue: 20%;
[0046] (3) Solid waste is alkali slag: 30%.
[0047] The preparation method steps of this carrier material are as follows:
[0048] (1) After the raw materials are crushed and stirred evenly according to the above ratio, the granulator is used to granulate to obtain material granules;
[0049] (2) The material particles enter the rotary kiln for two-stage roasting. The first stage of the two-stage roasting is low-temperature roasting, and the low-temperature section is continuously and gradually increased in temperature, and roasted at 100°C-300°C for 45 minutes; the second The section is fired at a high temperature, and fired at 890°C-950°C for 60 minutes to obtain s...
Embodiment 2
[0060] Example 2, a carrier material prepared from chemical hazardous waste, the carrier material is made of the following raw materials in weight ratio:
[0061] (1) High-salt chemical hazardous waste: 45%; the NaCl content of this high-salt chemical hazardous waste is 90%;
[0062] (2) Clay or gangue: 18%;
[0063] (3) Solid waste: 37%, selected from a mixture of tailings sand and waste slag, half and half.
[0064] The preparation method step of carrier material is as follows:
[0065] (1) After the raw materials are crushed and stirred evenly according to the above ratio, the granulator is used to granulate to obtain material granules;
[0066] (2) The material particles enter the rotary kiln for two-stage roasting. The first stage of the two-stage roasting is low-temperature roasting at 200°C-400°C for 30 minutes; the second stage is high-temperature roasting at 1000-1100°C Roast for 100 minutes to obtain spherical ceramsite with a vitrified surface.
Embodiment 3
[0067] Example 3, a carrier material prepared from chemical hazardous waste, the carrier material is made of the following raw materials in weight ratio:
[0068] (1) High-salt chemical hazardous waste: 30%; the NaCl content of this high-salt chemical hazardous waste is 75%;
[0069] (2) Clay or gangue: 20%;
[0070] (3) Solid waste: 50%, selected from the mixture of lead-zinc slag and iron slag, half and half.
[0071] The preparation method step of carrier material is as follows:
[0072] (1) After the raw materials are crushed and stirred evenly according to the above ratio, the granulator is used to granulate to obtain material granules;
[0073] (2) The material particles enter the rotary kiln for two-stage roasting. The first stage of the two-stage roasting is low-temperature roasting at 150°C-350°C for 60 minutes; the second stage is high-temperature roasting at 950°C-1150°C Lower firing for 50 minutes to obtain spherical ceramsite with a vitrified surface.
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