Abstract: Desulfurized gypsum carries high moisture and easy sticking risk. This article explains gypsum grinding workflow, MTW mill features and common failure reasons in gypsum powder projects.
Gypsum resources include natural gypsum and industrial by-product desulfurized gypsum from power plant. After grinding processing, gypsum powder is widely used for gypsum board raw material, cement retarder, building gypsum and chemical filler. Natural gypsum owns relatively low moisture, while desulfurized gypsum contains high free water, which makes drying procedure extremely critical. Different application scenarios require different powder fineness: building gypsum and cement retarder products mainly adopt 200-325 mesh; high-end filler gypsum powder can reach 600-800 mesh.
Gypsum grinding standard workflow is raw material crushing, impurity removing, drying (mandatory for desulfurized gypsum), quantitative feeding, grinding, air classification and finished product collection packaging. Desulfurized gypsum without sufficient drying will stick to mill inner wall, cause material blockage and make actual output far below design value.
For medium and small-size gypsum powder factories producing 200-400 mesh building gypsum and cement retarder powder, MTW Series European Trapezium Mill is proven reliable host machine. Combined-type wear-proof shoveling blade only needs blade-tip replacement during maintenance to cut spare part cost. Arc air-duct design reduces air-energy loss and improves material wind-transport efficiency. Bevel-gear whole-transmission structure realizes high transmission efficiency and saves workshop space.
Feed particle size can reach 50 mm. Adjustable powder fineness ranges from 80 mesh to 400 mesh. When cooperating with matched pulse dust collector, the whole production-line runs under sealed negative-pressure status, effectively preventing gypsum dust overflow and meeting local environmental protection standards. SBM can supply complete turnkey solution including crusher, bucket elevator, raw material silo, MTW main mill and packing equipment, plus site layout suggestion and installation-guidance service.
A large number of gypsum project failures come from insufficient drying capacity for desulfurized gypsum. Investors should not copy natural gypsum processing scheme directly for desulfurized gypsum project. Raw material type and moisture content must be confirmed in early-stage technical communication.
If you are going to set up gypsum powder production facility for natural gypsum or desulfurized gypsum, please leave a message or click business consultation button. Submit raw material type, moisture value, target hourly capacity and finished powder mesh. SBM engineers will design complete drying plus grinding production-line solution for your gypsum project.
Summary: This article differentiates natural gypsum and desulfurized gypsum processing demands. It introduces MTW European mill performance and reminds critical drying requirement for high-moisture desulfurized gypsum.
FAQ
Q1: Is drying necessary when grinding desulfurized gypsum?
A: Yes. High moisture of desulfurized gypsum will cause sticking and blocking without proper drying pretreatment.
Q2: What mesh size is building gypsum powder mostly produced?
A: Building gypsum and cement retarder generally adopt finished powder of 200-325 mesh.
Q3: Can MTW European mill get full-set turnkey gypsum grinding line support?
A: Yes. SBM provides one-stop solution covering crushing, conveying, grinding, dust-removal and packing equipment.
