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Method for preparing ceramsite by using nickel hydrometallurgy slag

A hydrometallurgical and ceramsite technology, applied in applications, ceramic products, clay products, etc., can solve problems such as effective utilization of hydrometallurgical slag lacking nickel, reduce the risk of heavy metal leaching, and achieve the effect of reuse

Pending Publication Date: 2021-08-24
荆门绿源环保产业发展有限公司 +1
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Problems solved by technology

[0005] The object of the present invention is to provide a method for preparing ceramsite by using nickel hydrometallurgy slag, which is used to solve the problem of lack of effective utilization methods for nickel hydrometallurgy slag in the prior art

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Embodiment Construction

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] Utilize the hydrometallurgy slag of nickel among the present invention to prepare the method for ceramsite, its step comprises:

[0016] (1) Dry the nickel slag and the shale respectively, grind them, and mix them evenly according to the mass ratio (1-5): (5-9) to obtain the raw meal. In this step, specifically, before mixing nickel slag and shale, they are dried to constant weight at 100-150°C, and after drying, they are introduced into a ball mill to ball-mill them t...

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Abstract

The invention discloses a method for preparing ceramsite by using nickel hydrometallurgy slag, the method comprises the following steps: respectively drying nickel slag and shale, grinding, and uniformly mixing according to the mass ratio of (1-5): (5-9) to obtain a raw material; uniformly mixing the raw material with water according to a mass ratio of 1: (0.05-2), pelletizing, drying, and controlling the water content to be less than 5% to obtain a plurality of dried pellets; and the multiple dried balls are subjected to a preheating procedure and a high-temperature roasting procedure in sequence and then naturally cooled, and the ceramsite prepared from the nickel hydrometallurgy slag is obtained. According to the method, the shale is introduced, the nickel hydrometallurgy slag and the shale are roasted, the non-toxic ceramsite capable of being directly applied is obtained, the problem that the nickel hydrometallurgy slag is difficult to treat is effectively solved, the heavy metal leaching risk of the nickel hydrometallurgy slag is remarkably reduced, and the effects of reutilization of hazardous waste, energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to the field of solid waste and hazardous waste treatment, in particular to a method for preparing ceramsite by utilizing nickel hydrometallurgy slag. Background technique [0002] Ceramsite is mainly used in the field of building materials. Most of its appearance features are round or oval spheres, but some are in the shape of irregular crushed stones. The shape of ceramsite varies with different processes, and its manufacturing methods mainly include swelling method and sintering method. Inflammation method preparation means that the raw materials are mixed with components that generate gas during the firing process. These gases expand the raw materials heated to the glass state, and are generally produced by rotary kilns. The sintering method means that during the sintering process of the finished pellets, the raw materials are solid-fused and bonded at high temperature without swelling, and the ceramsite is prepared by boilin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/132C04B33/138
CPCC04B38/009C04B33/138C04B33/1327Y02P40/60
Inventor 许开华薛清华黄冬波朱君叶标赵明
Owner 荆门绿源环保产业发展有限公司
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