�ۺ��Ȼ��X�F��a(ch��n)��

��r�g��2012-03-11 22:38 ��Դ��x��Դ��ˮ��޹�˾ ��: ��x��3819

��1��a(ch��n)��
��1-�A��
ԭ�Ϟ��Ȼ��F��c��Ƃ乤ˇ��Fe3+��ȿ��0.01-0.75mol,��OH-/Fe3+=0-2.5;��100ml0.5��Fecl.6H2O��Һϡጵ�2000ml
,��ٔ��裬��500ml10.25N��NaOH,��˕r��Ƃ��ۺ��Ȼ��F,��
��2-�ӟᷨ
��ԁ�ˮϡ��Ȼ��F��ȿ��ڣ�Fe3+)0.75-0.70ml,��Һ�ض��100��,��ٔ��l��¼�ע�ԁ�ˮ,��ˎ��׾÷ţ��S��S�Ƃ�,��
��2��c(di��n)
��ٶȿ�,��Ȼ��F��20%,��,��w��󣬱��^�V,��a(ch��n)��ˇ��,��ԭ��׵ã�ԓ��g��С,��
�� ۺ��Ȼ��X��a(ch��n)��
1.��a(ch��n)ԭ��
�X��,��Xм��X�Vʯ,��ú��ʯ,��ú�Ҽ��}��ȡ�
2.��a(ch��n)��
��1��Al(OH)3һ��
��X�c�}��m��(d��ng)��,��ں��m�Ĝض�,��(y��ng)�r�g��l��£��M(j��n)�л��W(xu��)��(y��ng)��,��Һ��ۺ��Ȼ��X,��ˇ��̈D��3-15.��

��Һ
ԭ��Ӌ��--->��(y��ng)��-->��ۡ�--->��Ʒ��X

��Al(OH)3��

��<-----------

��D3-15��һ��ˇ��̈D

��2��X�ҷ�
ԓ��ǲ��ò��ܷ�,��ԭ��X�Һ��}��,��}�ᣨ�|(zh��)��(sh��)��ܳ��X��|(zh��)��(sh��)��X��M(j��n)��ܳ��(y��ng)��ܳ��X��ˮ��r,��֮a(ch��n)��,��@��a(b��)��㣬�؏�(f��)ʹ��,��Ǳ��ɾۺ��Ȼ��X,��A��Ȟ�45%-60%��˷��Σ��ɱ��,��a(ch��n)Ʒ�|(zh��)��Բ�,��U�a(ch��n)��
��3��ú��ʯ��
ú��ʯ��,��ڸߜ�700��±��1h,��ע19%�}�ᷴ��(y��ng)��Ȼ��X��Һ��l(f��)��,��ʹ֮�Y(ji��)��,��ڷ��v��(y��ng)��У��ѽY(ji��)��AlCL3�ӟ�,��ʹ�䲿�ַֽ�׃��w��,��һ��A��ȵľۺφ��w��Aʽ�Ȼ��X��Ȼ��m��ˮ�M(j��n)��̎��,��˕r��ɘ�֬��w��X,��
�a(ch��n)Ʒ��S��ɫ��(sh��)ֵ��w��Ч�ɷ֣�Al2O3��22%-24%,�A��70%-75%,��΢��,��
��4��ܷ�ú�ҷ�
�b�ڷ�ú��е�Al2O3��Էǻ��Ը��X��w��ʯ��3Al2O3.SiO2��ʽ��ڣ��ʺ��y��ֱ��ܳ�,��܄�NH4F.��w��ˇ,��(d��ng)�܄��HCl�r��Ȟ�6M,��ң��܄�=1��2.5,��ܳ��r�g2С�r��(d��ng)�܄��H2SO4�r,��9M,��ң��܄�=1��2��ܳ��r�g2h,��Al203�ܳ�
�ʼs��38%-48%,��ܳ�Һ��(j��ng)��̎��󼴞�ۺ��Ȼ��X��a(ch��n)Ʒ��t��ɫ��Һ�w,��}��ȼs��85%,��a(ch��n)ƷpH=3.1—4.9.
��5��ߎX��β�V��
�ߎX��ַQ��Al2O3��20%��,��K��A��,��@�N��һ�Nˮ�Ϲ��X�V��|(zh��)��øߎX��Ƃ�Aʽ�Ȼ��X��N��,��ᷨ,��A��кͷ�,��ᷨ��ˡ��w�ᷨ��Q��η�,��ߎX��鵽60Ŀ,��650—750�ȱ��0.5—1.0h��20%�}��,��ȿ��1.0mol/L,��(y��ng)1—2h��îa(ch��n)Ʒ��
3.��X��c(di��n)
��Ч��(y��u)��X,��၆�F,��Ȼ��F��w�γɉK,��ٴ�,��(y��ng)�r�g�̣��̎��Ԫ��a(ch��n)��(qi��ng)��,��Óˮ��ܺ�,��Uˮ��pH��ض�,��,��A�ȵ��m��(y��ng)��V,��̎��ˮpH��׃С,��X��}�֚��С��ڻ��,��ɱ��,��m�ø��N��I(y��)�Uˮ��̎��

����D(zhu��n)�d��ǳ��ڂ��f��Ϣ֮Ŀ��,��Ё�Դ��(bi��o)ע�e�`��ַ��ĺϷ��(qu��n)��,��Ո��߳֙�(qu��n)��C��c��W(w��ng)(li��n)ϵ��҂��r��,��h��,��x�x��