Process for the production of copper oxychloride comprising the following steps: - a first step for forming copper oxychloride, in which a predefined quantity of alkaline waste of a CER 11 01 07 or CER 11 01 11 type is introduced into a reactor (A01, A02) and simultaneously adding a predefined quantity of alkaline waste of a CER 11 01 07 or CER 11 01 11 type and acid waste of a CER 11 01 05 or CER 11 01 06 type to start the formation reaction of copper oxychloride, keeping the mixture inside the reactor (A01, A02) in agitation; once the pH of the reaction has stabilized, the correction is carried out by adding either further waste or acids or bases, until the desired pH value between 4.5 ÷ 7.5 is reached; - a second step of filtering by first filter media and washing with water heated by first heating media of the product of the first stage of the process, in order to separate the copper oxychloride retained by the first filter media from the water mothers containing ammonium chloride and from the finest oxychloride particles; - a third drying step of copper oxychloride by means of drying means to pulverize it, dry it and transport it to second filtering means; - a fourth step of filtering the copper oxychloride by means of the second filter media in order to separate the oxychloride powder retained by the second filter media from the air used as a vehicle for the transport of the oxychloride from the media drying on the second filter media; - a fifth step of adding predetermined additives to the oxychloride powder filtered by the second filter media and of homogenizing the oxychloride powder and additives by first homogenizing media; - a sixth step of grinding/micronizing oxychloride powder and additives by means of micronization; - a seventh filtering step of the micronized product by means of third filtering means; - an eighth homogenization step of the product filtered by the third filtering means, by means of second homogenization means, characterized in that in the fifth step the first homogenization means receive the copper oxychloride powders filtered by the second filter media by means of starting/handling means configured to move a predefined quantity of powder, and characterized in that a sample of oxychloride filtered by the second filter media is taken to carry out product characterization analyzes, in order to determine the quantity and type of additives to be added in the first phase of copper oxychloride formation. - a first step for forming copper oxychloride, in which a predefined quantity of alkaline waste of a CER 11 01 07 or CER 11 01 11 type is introduced into a reactor (A01, A02) and simultaneously adding a predefined quantity of alkaline waste of a CER 11 01 07 or CER 11 01 11 type and acid waste of a CER 11 01 05 or CER 11 01 06 type to start the formation reaction of copper oxychloride, keeping the mixture inside the reactor (A01, A02) in agitation; once the pH of the reaction has stabilized, the correction is carried out by adding either further waste or acids or bases, until the desired pH value between 4.5 ÷ 7.5 is reached; - a second step of filtering by first filter media and washing with water heated by first heating media of the product of the first stage of the process, in order to separate the copper oxychloride retained by the first filter media from the water mothers containing ammonium chloride and from the finest oxychloride particles; - a third drying step of copper oxychloride by means of drying means to pulverize it, dry it and transport it to second filtering means; - a fourth step of filtering the copper oxychloride by means of the second filter media in order to separate the oxychloride powder retained by the second filter media from the air used as a vehicle for the transport of the oxychloride from the media drying on the second filter media; - a fifth step of adding predetermined additives to the oxychloride powder filtered by the second filter media and of homogenizing the oxychloride powder and additives by first homogenizing media; - a sixth step of grinding/micronizing oxychloride powder and additives by means of micronization; - a seventh filtering step of the micronized product by means of third filtering means; - an eighth homogenization step of the product filtered by the third filtering means, by means of second homogenization means,