11. Incineration, for example is listed by Manly P . Hall . ( Also see Calcination .) 12. Here the carbonate mineral ( CaCO 3 ) is transformed into lime ( CaO ) through calcination . 13. Calcination allows for removal of the carbon from the product and results in hollow metal oxide spheres.14. Direct calcination and sintering without re-milling is possible as well but leads to poor magnetic properties. 15. These people were primarily engaged in agriculture, weaving, furriery, and calcinations which continued until 1950. 16. Another common way to synthesize WO 3 is by calcination of ammonium paratungstate ( APT ) under oxidizing conditions: 17. Natural cement is produced in a process that begins with the calcination of crushed carbonate sedimentary rocks in kilns. 18. Another direct human impact on the carbon cycle is the chemical process of calcination of limestone for precursor of cement. 19. In the AUC route, calcination , reduction and stabilization are simultaneously carried out in a vertical fluidized bed reactor. 20. The main shortcoming of Ca-looping technology is the decreased reactivity of CaO through multiple calcination -carbonation cycles. 