The present invention a solution that does not include the firing shell powder contains the eluted component from the firing shell powder, and a large amount providing a solution preparation apparatus may be prepared to. The A stirred tank 1a of the solution preparation apparatus 1, the tank body 10 having a water supply port 11, a stirring device for stirring by the rotation of the stirring blades 16 the contents of the tank body 10, and the tank body The average particle diameter in the interior of the 10 is a configuration including a shell powder supply unit for supplying the fired shell powder 5 m~10 m. In addition, the filtration device 1b of solution preparation apparatus 1, suspension transfer unit for transferring the suspension from the tank body 10, at least on the upstream side of the packed bed of powder of powder or porous ceramics porous mineral basis weight of 500g / m 2 ~800g / m 2 filtering layer 40 non-woven filter is laminated on, and filtrate discharge for discharging the filtrate which has passed through the filtration layer 40 configuration and will be equipped with a pipe 45.BACKGROUND 1【課題】焼成貝殻粉末から溶出した成分を含み焼成貝殻粉末を含まない溶液を、大量に調製することができる溶液調製装置を提供する。【解決手段】溶液調製装置1の撹拌槽1aを、水供給口11を有する槽本体10、槽本体10の内容物を撹拌翼16の回転により撹拌する撹拌装置、及び、槽本体10の内部に平均粒子径が5μm~10μmの焼成貝殻粉末を供給する貝殻粉末供給部を備える構成とする。また、溶液調製装置1の濾過装置1bを、槽本体10から懸濁液を移送する懸濁液移送部、多孔質鉱物の粉末または多孔質セラミックスの粉末の充填層の少なくとも上流側に目付が500g/m2~800g/m2の不織布フィルタが積層されている濾過層40、及び、濾過層40を通過した濾過液を排出する濾過液排出パイプ45とを備える構成とする。【選択図】図1
