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        HPO₄^2-+ Mg²⁺+ NH₄⁺ + 6H₂O ---- MgNH₄PO₄•6H₂O + H⁺      ��1��

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1.��(sh��)�(y��n)�O(sh��)�䣨��1��

2.��(sh��)�(y��n)��̣�Ҋ�D1��

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        �ɱ�2�ɵó��½Y(ji��)Փ��

        (1)MgCl₂•6H₂O��ڷ��(y��ng)ʽ(1)�M(j��n)�С�
        (2)MgCl₂•6H₂O��^��ӵ�һ��̶Ⱥ�,��Һ��(qi��ng),��ʹ��(y��ng)��ײ��D(zhu��n)��H₂PO₄^-��ʽ��Ķ�ʹ��ˮ��еĚ��,��ͬ��ԭ��,��׵ĳ��SMgCl₂•6H₂O�^��ʵ��Ӷ��ӣ��һ��̶Ⱥ��֜p��,��
        (3)��@һ��،�(sh��)�(y��n)֪,��ѵ�MgCl₂•6H₂O��Փ��60%.

3.�Y(ji��)Փ

        ��ϵ��о��Y(ji��)��@ʾ:��W(xu��)��в��Դ󡢳��Ч�ʸ�,��(ji��n)�ε��c(di��n),��ɵ�MgNH4PO4•6H2O�Y(ji��)��,��^�V.ͬ�r(sh��)߀��Եó��½Y(ji��)Փ��

        (1)�Uˮ�г�ʼ��ם�Ȍ�(du��)һ��̎��Һ�К��ם�ȵ�Ӱ푱��^�@��
        (2)��]��ͬ��ˮ�w��I(y��ng)�B(y��ng)��,��(y��ng)�r(sh��)[Mg²⁺]/[P]=1��,��
        (3)��(y��ng)��pHֵ��9.4��
        (4)��]��pHֵ,��NH₄HCO₃��(du��)��׷��(y��ng)Ӱ�,��C�ό�(sh��)�(y��n)�Y(ji��)��õ��ѵ�MgCl₂•6H₂O��[Mg²⁺]/[P]=1.3,��ˇ�l��,��^�̳��Ч�ʸ��_(d��)99.5%��ϡ�

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