Soil conditioner production process and its equipment

Abstract

The invention discloses a soil conditioner production process and relates to the technical field of soil conditioner production. The soil conditioner production process comprises the following steps:preliminary dewatering waste residues produced in a process of synthesizing thiourea from lime nitrogen and hydrogen sulfide until the moisture content is 40-45%, feeding into stirring equipment, andadding magnesium sulfate, zinc sulfate, copper sulfate, manganese sulfate and ferric sulfate powder particles, wherein the magnesium sulfate, zinc sulfate, copper sulfate, manganese sulfate and ferricsulfate respectively account for 0.5-2%, 0.5-2%, 1-3%, 1-2% and 1-3% of gross dry weight; adding noodle soup to regulate the moisture content to be 55-60%; preliminary dewatering waste residues produced in the process of synthesizing thiourea from lime nitrogen and hydrogen sulfide, drying and grinding, and adding sulfate of elements such as magnesium, zinc, copper, manganese and iron; starting ashaker cup type granulator for granulating; and delivering particles thrown from a discharging hole to a drying machine to be dried via a flexible pipeline. The invention further provides soil conditioner production equipment. The soil conditioner prepared in the invention is dense in particles and high in quality conformity.

Description

Technical field: [0001] The invention relates to the technical field of soil conditioner production, in particular to a soil conditioner production process and equipment thereof. Background technique: [0002] In the process of using lime nitrogen and hydrogen sulfide to prepare thiourea, a large amount of thiourea waste residue will be produced, and its main components are calcium hydroxide and carbon. After dehydration, the thiourea waste residue can be mixed with magnesium, zinc, copper, manganese, iron, etc. Sulfate and borax are used as soil conditioners, mainly for the treatment of acidic soil, and can also be used for improving the composition of alkaline soil and saline-alkali soil. [0003] The reaction formula for preparing thiourea from lime nitrogen and hydrogen sulfide is: [0004] CaCN 2 +H 2 S+2H 2 O→(NH 2 ) 2 CS+Ca(OH) 2 [0005] Generated Ca(OH) 2 If the water content is too high, it needs to be dehydrated and dried before disc granulation-drum gran...

AI Technical Summary

Problems solved by technology

[0005] Generated Ca(OH) 2 If the water content is too high, it needs to be dehydrated and dried before disc granulation-drum granulation, the production process is complicated; and limited by the disc granulation-drum granulation process, the product has low density and is easy to break. Poor quality consistency (i.e. large particle size variations)

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