Preparation method of high-performance bone black

Abstract

The invention discloses a preparation method of high-performance bone black. The preparation method comprises the following steps of: firstly, crushing animal bone which is subjected to de-fatting and degumming into grains of 1-5mm; secondly, feeding the granular animal bone into a carbonizing and activating furnace, raising the furnace temperature to be at 500-550 DEG C in velocity of 5-10 DEG C / min; subsequently adding a composite activating agent; continuously raising the temperature to be at 650-750 DEG C and keeping the constant temperature for 1-3hours; rapidly cooling the furnace temperature to be at 150-180 DEG C and stopping feeding the composite activating agent, and discharging when the furnace temperature is reduced to be at 100 DEG C; adding the carbonized and activated bone black into an alkali water solution, and introducing steam to boil and wash for 5-10 times; putting the boiled and washed bone black into a carbon dioxide water solution to be washed for 5-10 times so as to adjust the pH value to be at 7.0-8.0; and fishing out the bone black after being washed, drying in air or drying in an oven so as to obtain a finished product, namely, the high-performance bone black. The preparation method has the characteristics of simple process and low cost, and the prepared bone black is strong in adsorption and purification capability.

Description

technical field

[0001] The invention relates to the field of preparation of active carbon, in particular to a preparation method of high-performance bone charcoal which fully utilizes animal bones and has low cost and strong adsorption and purification ability. Background technique

[0002] Activated carbon has a well-developed pore structure and a huge specific surface area (500-3000㎡ / g), good adsorption performance, strong adsorption capacity for gases, organic or inorganic substances in solution, and colloidal particles, etc., and sufficient chemical stability properties, mechanical strength, acid resistance, alkali resistance, heat resistance, insoluble in water and organic solvents, easy to regenerate after use and other good properties, in the food industry, sugar, medicine, chemical industry, environmental protection, national defense, agriculture, fuel gas storage, It has a wide range of applications in many fields such as gas separation and catalytic reaction. The ...