[Soda Ash Knowledge] Question of the Day (167) March 29, 2010

The calcination rate is the percentage by mass of soda ash obtained after calcining trona. The formula is: Calcination rate = (Amount of soda ash after calcination [g] / Amount of heavy soda sample [g]) × 100%. When the crystals of heavy soda are large and contain less moisture, the calcination rate is high. In such cases, scaling in the calcination furnace is minimal, resulting in a lower amount of soda ash needing to be recycled. Consequently, the production capacity of the calcination furnace increases, and less steam or fuel is required to produce each ton of soda ash. Therefore, it is necessary to improve the firing rate. The reasons for the low calcination rate are: 1. Poor quality of sodium bicarbonate crystals ； 2. The filter runs at too high a speed; after the filter cake forms, the drying time is insufficient ； 3. Low vacuum level, low blowing pressure ； 4. The washing water temperature is low, and the flow rate of the washing water is too high.

The calcination rate is the ratio after the calcination of sodium bicarbonate. Increasing this rate can improve the quality of soda ash. Poor crystallization of sodium bicarbonate is one of the reasons for a low calcination rate

The calcination rate is the percentage by mass of soda ash obtained after calcining trona. The formula is: Calcination rate = Amount of soda ash after calcination (g) / Amount of sodium bicarbonate fed into the furnace (g) × 100%. When the crystals of sodium bicarbonate are large and contain less moisture, the calcination rate is high. In such cases, scaling in the calcination furnace is minimal, resulting in a lower requirement for re-feeding sodium bicarbonate. Consequently, the furnace’s production capacity increases, and less steam or fuel is needed to produce each ton of soda ash. Therefore, it is necessary to improve the firing rate. The reasons for the low calcination rate are: 1) Poor quality of sodium bicarbonate crystals; 2) The filter runs at too high a speed, resulting in an overly thick filter cake and insufficient drying time. 3) Low vacuum degree and low blowing pressure. 4) Low washing water temperature; excessive washing water flow

Answer: The calcination rate is the percentage by mass of soda ash obtained after calcining trona. The formula is: Calcination rate = (Amount of soda ash after calcination [g] / Amount of heavy soda sample [g]) × 100%. When the crystals of heavy soda are large and contain less moisture, the calcination rate is high. In such cases, scaling in the calcination furnace is minimal, resulting in a lower amount of soda ash needing to be recycled. Consequently, the production capacity of the calcination furnace increases, and less steam or fuel is required to produce each ton of soda ash. Therefore, it is necessary to improve the firing rate. The reasons for the low calcination rate are: 1. Poor quality of sodium bicarbonate crystals ； 2. The filter runs at too high a speed; after the filter cake forms, the drying time is insufficient ； 3. Low vacuum level, low blowing pressure ； 4. The washing water temperature is low, and the flow rate of the washing water is too high. 1# steinback

What is the firing rate? Why is it necessary to increase the firing rate? What are the reasons for a low firing rate? Answer: The calcination rate is the percentage by mass of soda ash obtained after calcining sodium bicarbonate. The formula is: Calcination rate = Amount of soda ash after calcination (g) / Amount of heavy soda sample (g) × 100%. When the crystals of heavy soda are large and contain less moisture, the calcination rate is high. In such cases, scaling in the calcination furnace is minimal, resulting in a lower requirement for re-added soda ash. Consequently, the production capacity of the calcination furnace increases, and less steam or fuel is consumed to produce each ton of soda ash. Therefore, it is necessary to improve the firing rate. The reasons for the low calcination rate are: ① Poor quality of sodium bicarbonate crystals; ② The filter runs at too high a speed, resulting in an overly thick filter cake and insufficient drying time; ③ Low vacuum level and inadequate blowing pressure ； ④The washing water temperature is low, and the flow rate of the washing water is too high.

The calcination rate is the percentage by mass of soda ash obtained after calcining trona. The formula is: Calcination rate = Amount of soda ash after calcination (g) / Amount of sodium bicarbonate fed into the furnace (g) × 100%. When the crystals of sodium bicarbonate are large and contain less moisture, the calcination rate is high. In such cases, scaling in the calcination furnace is minimal, resulting in a lower requirement for re-feeding sodium bicarbonate. Consequently, the furnace’s production capacity increases, and less steam or fuel is needed to produce each ton of soda ash. Therefore, it is necessary to improve the firing rate. The reasons for the low calcination rate are: 1) Poor quality of sodium bicarbonate crystals; 2) The filter runs at too high a speed, resulting in an overly thick filter cake and insufficient drying time. 3) Low vacuum degree and low blowing pressure. 4) Low washing water temperature; excessive washing water flow

The calcination rate is the mass fraction of soda ash obtained after calcining trona. The formula is: Calcination rate = (Amount of soda ash after calcination [g] / Amount of heavy soda sample [g]) × 100%. When the crystals of heavy soda are large and contain less moisture, the calcination rate is high. In such cases, scaling in the calcination furnace is minimal; less soda needs to be recycled. Consequently, the productivity of the calcination furnace increases, and less steam or fuel is required to produce each ton of soda ash. Therefore, it is necessary to improve the firing rate. The reasons for the low calcination rate are: (1) Poor quality of sodium bicarbonate crystals ； (2) The filter rotates too quickly; the filter cake is too thick, and the drying time is too short ； (3) Low vacuum degree, low blowing pressure ； (4) The washing water temperature is low, and the flow rate of the washing water is too high. 1# steinback

Calcination rate of sodium bicarbonate: The percentage by weight of the residue obtained after calcining sodium bicarbonate. The reasons for the low calcination rate are roughly as follows: 1. Poor quality of sodium bicarbonate crystals ； 2. The filter rotates too quickly; the filter cake is too thick, and the drying time is too short ； 3. Low vacuum level, low blowing pressure ； 4. Low washing water temperature and high washing water flow rate. The specific solutions depend on the causes in actual production; appropriate measures should be taken to control them. 1# steinback

The calcination rate is the percentage by mass of soda ash obtained after calcining trona. Sodium bicarbonate with larger crystal particles and lower moisture content results in a higher calcination rate. It also causes less scaling in the calciner, requires less re-alkalization, enables greater production capacity of the calciner, and consumes less steam or fuel to produce each ton of soda ash. Therefore, it is necessary to improve the firing rate. The reasons for the low calcination rate are: 1. Poor quality of sodium bicarbonate crystals; 2. The filter runs at too high a speed, resulting in an overly thick filter cake and insufficient drying time; 3. Low vacuum level and low blowing pressure; 4. Low washing water temperature and excessive washing water flow rate.

Answer: The calcination rate is the percentage by mass of soda ash obtained after calcining trona. Large crystalline particles of sodium bicarbonate and low moisture content result in a high calcination rate ； The scaling caused by heavy soda in the calciner is relatively minor, resulting in a low amount of soda that needs to be recycled. This allows for greater production capacity of the calciner; moreover, less steam or fuel is consumed per ton of soda ash produced. Therefore, it is necessary to improve the calcination rate. The reasons for the low calcination rate are: 1. Poor quality of sodium bicarbonate crystals; 2. Excessive filter speed, resulting in an overly thick filter cake and insufficient drying time; 3. Low vacuum level and low blowing pressure; 4. Low washing water temperature and excessive washing water flow rate. 1# steinback