A method for making a water/gypsum mixture

A method for continuous manufacturing water/gypsum mixture at water/gypsum ratio of less than 0.25:1, which involves moving the mixture of liquid and dry components within a continuous process cycle, including the following stages:

• pre-mixing flows of fluid water/gypsum mixture and dry components;
• a. obtaining, in a mixer, a homogeneous water/gypsum mixture with a specified water/gypsum ratio, by mixing pre-mixed dry components flow and fluid water/gypsum mixture flow;
• b. releasing a portion of the finished water/gypsum mixture flow from the process cycle;
• c. returning the rest of the finished water/gypsum mixture flow to the mixing process at subsequent stages as a flow continuously circulating through all stages;
• d. obtaining a fluid water/gypsum mixture flow after adding liquid components flow to the remaining returnable portion of the water/gypsum mixture flow with subsequent mixing,
• In this case, the amount of dry and liquid components, the amount of released and remaining finished water/gypsum mixture flows is determined by the formula (1), and the required water/gypsum ratio is achieved by mixing the initial components and is determined by the formula (2):
• df
• +
• (
• wf
• +
• rf
• )
• =
• rf
• +
• mf
• ,
• (
• 1
• )
• where ‘df’ is the dry components flow introduced at stage a);
• ‘wf’ is the liquid components flow introduced at stage e);
• ‘rf’ is the water/gypsum mixture flow retained in the cycle at stage d) and fed for watering at stage e);
• ‘mf’ is the water/gypsum mixture flow released from the cycle at stage c);
• R
• =
• (
• wf
• -
• wfd
• )
• /
• (
• df
• -
• dfd
• )
• ,
• (
• 2
• )
• where ‘R’ is water/gypsum ratio;
• ‘wfd’ is the dry portion flow in the liquid components;
• ‘dfd’ is the dry components flow other than gypsum.