Emulsified bitumen equipments can be classified into three types according to the process flow: intermittent operation, semi-continuous operation, and continuous operation. The process flows are shown in Figure 1-1 and Figure 1-2 respectively. As shown in Figure 1-1, the intermittent modified emulsified bitumen production equipment mixes emulsifiers, acids, water, and latex modifiers in the soap solution mixing tank during production, and then pumps it into the colloid mill with bitumen.

After a tank of soap solution is used up, soap solution is prepared again, and then the next tank is produced. When used for modified emulsified bitumen production, according to different modification processes, the latex pipeline can be connected to the front or back of the colloid mill, or there is no dedicated latex pipeline, but the regular dose of latex is manually added to the soap solution tank.
The semi-continuous emulsified bitumen production equipment is actually an intermittent emulsified bitumen equipment equipped with a soap solution mixing tank, so that the mixed soap solution can be replaced to ensure that the soap solution is continuously sent to the colloid mill. A considerable number of emulsified bitumen production equipment in China belong to this type.
Continuous emulsified bitumen production equipment pumps emulsifier, water, acid, latex modifier, bitumen, etc. directly into the colloid mill with metering pumps. The mixing of soap solution is completed in the delivery pipeline.